NSMQ 2024 TRUE or FALSE PAST QUESTIONS AND ANSWERS.
NSMQ 2024 TRUE or FALSE PAST QUESTIONS AND ANSWERS.
1. All flowers are negatively gravitrophic.
Ans: False
2. Plant stems are neutral to gravity
Ans: False
3. The shoot of a plant is never phototrophic
Ans: False
4. All aerial plant parts are positively gravitrophic
Ans: False
PREAMBLE: The olfactory cell is
5. Sitmotec in the ear
Ans: False
6. Absent in plant
Ans: True
7. A modified neuron
Ans: True
8. A receptor for the sense of smell
Ans: True
PREAMBLE: According to Newton’s 1st law of motion
9. A body at rest is acted upon by
Ans: False
10. A natural state of a body is the state of uniform motion along a straight line
Ans: False
11. The natural state of a body is the state of rest
Ans: False
12. The natural state of a body is the state of uniform motion along a straight line
Ans: False
13. The natural state of a body is the state of rest or the state of uniform motion along a straight line
Ans: False
14. The velocity-time graph for a particle in uniform motion is a straight line inclined to the time axis
Ans: False
15. The slope at the point on the velocity time graph for a particle in uniform motion is the particle’s acceleration
Ans: True
16. The velocity-time graph for a particle in uniform motion is a straight line parallel to the velocity axis
Ans: False
17. The velocity-time graph for a particle in uniform motion is a straight line parallel to the time axis
Ans: True
18. In electrolytic cells, the cathode is the negative electrode
Ans: True
19. In electrolytic cells, a spontaneous reaction generates electrical energy
Ans: False
20. In electrolytic cells, oxidation occurs at the cathode
Ans: False
21. Electrolytic cells are commonly used in electroplating metals
Ans: True
22. Molecules of dimethyl ether form hydrogen bonds with each other
Ans: False
23. Molecules of ethyl amine form hydrogen bonds with each other
Ans: True
24. Molecules of bromoethane form hydrogen bonds with each other
Ans: False
25. Molecules of 2-methyl-2-propanol form hydrogen bonds with each other
Ans: True
PREAMBLE: For the function
26. y = sin x defined on the intervals 0 ≤ x ≤ π, the range is the set y: -1 ≤ y ≤ 1
Ans: False
27. y = cos x defined on the intervals 0 ≤ x ≤ π the range is the set y: -1 ≤ y ≤ 1
Ans: True
28. y = tan x defined on the intervals 0 ≤ x ≤ π/2 the range is the set y: y ≥ 0
Ans: True
29. y = sec x defines on the intervals 0 ≤ x ≤ π/2 the range is the set y: y ≥ 1
Ans: True
30. 7 / 15 is less than 3 / 8
Ans: False
31. 9 / 22 is less than 10 / 23
Ans: True
32. 15 / 29 is less than 5 / 9
Ans: True
33. 13 / 7 is less than 15 / 8
Ans: True
34. Root hair is of enoginious origin
Ans: False
35. Root hairs arise from the cortex
Ans: False
35. Root hairs are extensions of epidermal cells
Ans: True
36. Root hairs totally cover the root
Ans: False
37. Ethers have an oxygen atom bonded to a carbon atom and a hydrogen atom
Ans: False
38. Dimether, ether, is the simplest ether
Ans: True
39. Ethers are generally slightly more polar than alcohol
Ans: False
40. Ethers are regularly dissolved in water
Ans: False
PREAMBLE: In x2 – 4x – 21 < 0 is then 3 < x < 7
41. -7<x<3
Ans: False
42. -7<x<-3
Ans: False
43. -3<x<7
Ans: True
PREAMBLE: For the function equals y=|x|
44. The domain is a set of positive real numbers
Ans: False
45. The domain is a set of negative real numbers
Ans: False
46. The domain is the set of all real numbers
Ans: True
47. The range is the set of non-negative real numbers
Ans: True
48. An ionic bond forms when electrons are transferred from one atom to another
Ans: True
49. Ionic bonds occur between two atoms with similar electronegativities
Ans: False
50. Ionic compounds dissolve greatly in non-polar solvents
Ans: False
51. When dissolved in water, ionic compounds are generally poor conductors of electricity
Ans: False
52. The work done by the net force of an object equals the kinetic energy of the object
Ans: False
53. The impulse of the net force of an object equals the change in linear momentum of the object
Ans: True
54. The work done by the net force on an object equals the change in kinetic energy of the object
Ans: True
55. The ratio of the net force on an object to the object’s mass equals the change in acceleration of the object
Ans: False
56. Increasing the surface area of a solid reactant increases the rate of reaction.
Ans: True
57. The rate constant k for a reaction depends on temperature but not on the concentration of reactants.
Ans: True
58. A catalyst changes the equilibrium constant of a reaction.
Ans: False
59. Reaction rate is directly proportional to the concentration of reactants in zero-order reactions.
Ans: False
60. DNA replication is semi-conservative, meaning each new DNA molecule contains one old and one new strand.
Ans: True
61. DNA polymerase synthesizes new DNA only in the 3’ to 5’ direction.
Ans: False
62. Okazaki fragments are found on the lagging strand during DNA replication.
Ans: True
63. Telomerase extends the ends of linear chromosomes to prevent loss of genetic material.
Ans: True
64. The myelin sheath in the CNS is formed by Schwann cells.
Ans: False
65. The blood-brain barrier protects the CNS by restricting the passage of certain substances from blood to brain tissue.
Ans: True
66. The medulla oblongata controls vital functions such as heart rate and respiration.
Ans: True
67. The cerebellum is primarily responsible for coordinating voluntary muscle movements and balance.
Ans: True
PREAMBLE: A simple pendulum undergoes 20 complete oscillations in
68. The pendulum has a period of
Ans: False
69. The period of the pendulum cannot be determined from the given information
Ans: False
70. The pendulum undergoes 5 complete oscillations in
Ans: True
71. The frequency of the pendulum is
Ans: False
PREAMBLE: In the flowering plant
72. The plant is anchored by rhizoids
Ans: False
73. The plant is dependent on water for fertilization
Ans: False
74. The plant feeds on all organic matter
Ans: False
75. The plant contains chloroplasts
Ans: False
76. Crickets are wild animals
Ans: true
77. Crickets are insects
Ans: true
78. Crickets stink
Ans: false
79. Crickets are louse
Ans: true
80. Crickets are diurnal insects
Ans: false
81. Snails have intestines
Ans: true
82. Snails are hermapoditic
Ans: true
83. Snails have crops
Ans: true
84. Snails live exclusively in the soil
Ans: false
85. Snails have a heart
Ans: true
PREAMBLE: In an equilibrium reaction
86. An increase in the concentration of reactants causes an increase in the rate of reaction
Ans: true
87. The higher the activation energy, the smaller the rate of reaction
Ans: true
88. Catalysts always increase the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy
Ans: true
89. An increase in temperature increases the rate of a chemical reaction
Ans: true
90. An increase in pressure increases the rate of the forward reaction
Ans: false
91. The two carbons in ethyne are sp3 hybridized
Ans: false
92. The two carbons in ethyne are sp2 hybridized
Ans: false
93. The two carbons in ethene are sp-hybridized
Ans: false
94. The two carbons in ethane are sp3 hybridized
Ans: false
95. The two carbons in ethane are sp2 hybridized
Ans: false
Preamble: The following quadrilateral is a cyclic quadrilateral
96. Parallelogram
Ans: false
97. Rectangle
Ans: true
98. Trapezium
Ans: false
99. Rhombus
Ans: false
100. Isosceles trapezium
Ans: true
101. The respiratory quotient value for anaerobic respiration is always greater than 1.0.
Ans: False
102. The respiratory quotient value for fats is lower than for carbohydrates because fats require more oxygen for complete oxidation relative to the carbon dioxide produced.
Ans: True [fats have a higher hydrogen to carbon ratio, leading to more oxygen consumption and a lower RQ, typically around 0.7]
103. A respiratory quotient value greater than 1.0 indicates that carbohydrates are the sole energy source being metabolized.
Ans: False
104. An RQ value of exactly 1.0 typically indicates that lipids are the primary respiratory substrate.
Ans: False
105. Dormancy is a period during which an organism temporarily stops growth and development.
Ans: True
106. Seeds in dormancy cannot germinate even when favourable conditions are provided.
Ans: True
107. Hibernation in animals is an example of dormancy.
Ans: True
108. Aestivation in animals is a form of dormancy that occurs during the cold winter months.
Ans: False
109. In a parallel circuit, the total resistance is equal to the sum of the individual resistances.
Ans: False
110. The total resistance of resistors in series is always greater than the resistance of any individual resistor.
Ans: True
111. A superconductor has zero electrical resistance at sufficiently low temperatures.
Ans: True
112. In a parallel circuit, the total resistance is always less than the smallest individual resistance.
Ans: True
PREAMBLE: The quadratic equation
113. 2x2 + 5x + 4 = 0 Has real root
Ans: false
114. x2 + 7x – 5 = 0 Has distinct real root
Ans: true
115. x2 – 10x + 7 = 0 Has no real root
Ans: false
116. x2 – 6x + 9 = 0 Has repeated root
Ans: true
117. x2 + 8x – 9 = 0 has distinct rational root
Ans: true
118. The volume of a sphere is proportional to the cube of its radius
Ans: True
119. The volume of a sphere is proportional to the cube of its diameter
Ans: True
120. The surface area of the sphere equals the square of its radius
Ans: false
121. The surface area of the sphere equals the square of its diameter
Ans: false
122. The surface area of the sphere equals the square of its radius times time
Ans: false
PREAMBLE: According to Newton’s third law of motion
123. The mass of an object is inversely proportional to its acceleration
Ans: false
124. The acceleration of an object is inversely proportional to its mass
Ans: false
125. A moving object undergoes acceleration
Ans: false
126. The mass of an object is inversely proportional to the magnitude of its acceleration
Ans: false
127. A moving object eventually comes to rest
Ans: false
128. The nortilods a cephalopods
Ans: True
129. Cuttlefish is a cephalopod
Ans: True
130. Squid is a cephalopod
Ans: True
131. An octopus is a cephalopod
Ans: True
132. Common names are stanched base
Ans: False
133. Common names are mostly based on groups
Ans: True
134. Common names may show a relationship
Ans: True
135. Common names are the same everywhere
Ans: False
136. 2 log x – 3 log y + 4 log z =log (x2 y-3) / (z – 4)
Ans: True
137. 3 log x + 2 log y – 4 log z = log x3 y2 z-4
Ans: True
138. 4 log x + 3 log y – 5 log z = log (x4 z-5) / (y-3)
Ans: True
139. 5 log x – 3 log y – 2 log z = log (x5 y-3) / (z-2)
Ans: False
PREAMBLE: The given linear equation is in the slope intercept form
140. 2x + 3y = 10
Ans: False
141. X = 2y + 5
Ans: False
142. x/3 + y/-5 = 1
Ans: False
143. y = 3x + 4
Ans: True
144. The symbol for yalium is Ya
Ans: False
145. The symbol for xenon is Xn
Ans: False
146. The symbol for radium is Ra
Ans: True
147. The symbol for antimony is An
Ans: False
148. Alkal halides readily undergo addition of reactions
Ans: False
149. Alkal halides readily undergo substitution reactions
Ans: True
150. Alkal halides readily undergo an elimination reaction
Ans: True
151. Alkal halides are formed from alkanes reaction with halogens
Ans: True
152. Magnetic field lines always form closed loops.
Ans: True
153. A magnetic field is strongest at the center of a bar magnet.
Ans: False
154. Moving electric charges can create a magnetic field.
Ans: True
155. The Earth’s magnetic field is caused by permanent magnets in its core.
Ans: False
156. The enthalpy change of combustion is always positive.
Ans: False
157. Endothermic reactions have a negative enthalpy change (ΔH < 0).
Ans: False
158. The enthalpy change of a reaction is independent of the reaction pathway, according to Hess’s Law.
Ans: True
159. The enthalpy change of formation of elements in their standard state is always greater than zero.
Ans: False
160. The kinetic energy of gas particles increases as the temperature increases.
Ans: True
161. According to the Kinetic Molecular Theory, gas particles are in constant random motion.
Ans: True
162. Gas particles experience strong intermolecular forces that hold them together.
Ans: False
163. At absolute zero (0 K), gas particles move at high speeds due to residual thermal energy.
Ans: False
PREAMBLE: An initially uncharged capacitor is connected in series with a resistor, an open switch, and a battery, and the switch is closed
164. The current that moves through the resistor is constant
Ans: False
165. No current flows through the capacitor
Ans: False
167. The same current flows through the capacitor as flows through the resistor
Ans: True
168. Current flows through the capacitor for a period equal to the RC time constant of the circuit, then stops
Ans: False
PREAMBLE: An object is at rest on a horizontal surface
169. A force the object exerts on the surface is equal but opposite to the force the surface exerts on the object
Ans: True
170. The force the surface exerts on the object equals the normal force on the object
Ans: True
171. The force the object exerts on the surface equals the weight of the object and acts at the centre of the gravity of the object
Ans: False
172. The weight of the object and the force the surface exerts on the object constitute action action-reaction pair
Ans: False
173. 0℃ is equivalent to 0℉
Ans: False
174. 0℃ is a lower temperature than 0℉
Ans: False
175. 0℃ is equivalent to 32℉
Ans: True
176. 100℃ is a lower temperature than 100℉
Ans: False
177. 100℃ is equivalent to 212℉
Ans: True
178. The main ingenious scale of a pair of mechanical vernier callipers has divisions of equal sides
Ans: False
179. In taking measurements of a pair of Vernier callipers, the reading obtained from the Vernier scale is added to the reading obtained from the main scale to obtain a precise result
Ans: True
180. In taking measurements with a pair of mechanical callipers, the main scale reading is obtained from the main scale mark that consists with the linear scale zero mark or lies just to the left of it
Ans: True
181. The size difference between the main elevenial scale on a mechanical Vernier calliper, corresponding to the least count for a particular pair of callipers
Ans: True
182. The main scale division of the pair of mechanical Vernier callipers is 19 layers, with markings indicating
Ans: False
183. A CO2 molecule is linear
Ans: True
184. The BeCl2 molecule is linear
Ans: True
185. The SO2 molecule is linear
Ans: False
186. The CO molecule is linear
Ans: True
187. HBr is a stronger acid than HCl
Ans: True
188. HF is a stronger acid than HCl
Ans: False
189. HI is a stronger acid than HBr
Ans: True
190. HI is a stronger acid than HF
Ans: True
191. HCl is a stronger acid than HCN
Ans: True
192. Exothermic reactions release heat to the surroundings.
Ans: True
193. The enthalpy change (ΔH) is positive for combustion reactions.
Ans: False
194. Hess’s Law allows enthalpy changes to be added for a multi-step reaction.
Ans: True
195. In an endothermic reaction, products have a lower enthalpy than reactants.
Ans: False
196. Increasing pressure favours the side of the reaction with fewer gas molecules.
Ans: True
197. A catalyst increases the value of the equilibrium constant.
Ans: False
198. Removing a product shifts the equilibrium to the right.
Ans: True
199. A reaction at equilibrium has equal concentrations of reactants and products.
Ans: False
200. The skin is the largest organ in the body
Ans: False
201. The skin and all its associated structures are the same for all mammals
Ans: False
202. All vertebrate has skin
Ans: True
203. Skin supports the growth of some fungi
Ans: True
204. Parasitic worms grow on the skin
Ans: False
205. Recycled paper can be used for food wraps
Ans: True
206. Recycling paper is good for kitchen towels
Ans: True
207. Recycled paper for baking
Ans: True
208. Recycled paper reduces greenhouse gas emissions
Ans: True
PREAMBLE: The point A in the x, y plane is the solution of the inequality 10 < (x2 + y2) < 25
209. The point A (2,3)
Ans: True
210. The point A (-3, -4)
Ans: False
211. The point A (3, -3)
Ans: True
212. The point A (1, -3)
Ans: False
213. The point A (5, 0)
Ans: False
214. The left ventricle pumps blood to the lungs.
Ans: False
215. Red blood cells contain haemoglobin, which binds to oxygen.
Ans: True
216. The pulmonary artery is the only artery in the body that carries deoxygenated blood.
Ans: True
217. The heart contracts due to signals from the nervous system alone.
Ans: False
218. Light can behave both as a particle and a wave.
Ans: True
219. The photoelectric effect proves the wave nature of light.
Ans: False
220. Electrons can exhibit diffraction patterns when passed through a double slit.
Ans: True
221. Increasing the intensity of light always increases the energy of individual photons.
Ans: False
222. A changing electric field produces a magnetic field.
Ans: True
223. Magnetic monopoles have been observed in natural systems.
Ans: False
224. In an electromagnetic wave, electric and magnetic fields are perpendicular to each other.
Ans: True
225. The speed of an electromagnetic wave is highest in water.
Ans: False
226. cos (a + 90°) =sin a
Ans: False
227. sin (a + 90°) = cos a
Ans: True
228. sin (a – 90°) = cos e
Ans: False
229. cos (a – 90°) = sin a
Ans: True
230. cos (a + 180°) = cos a
Ans: False
231. Not every living thing is of economic importance to man
Ans: False
232. Earthworms are of no economic benefit to man
Ans: False
233. The sea, apart from food, provides no economic importance to man
Ans: False
234. Inedible mushrooms are of no economic importance
Ans: False
235. Groundnuts are not legumes
Ans: False
236. The groundnut plant does not flower
Ans: False
237. Groundnut plant produces no fruits
Ans: False
238. Groundnuts are seeds
Ans: True
239. NaF is an ionic compound
Ans: True
240. PCl3 is an anionic compound
Ans: False
241. MgI2 is an ionic compound
Ans: True
242. SiBr4 is an ionic compound
Ans: False
243. Pb3N2 is soluble in water
Ans: True
244. AgI is soluble in water
Ans: False
245. NH4 Br is soluble in water
Ans: True
246. K2SO4 is soluble in water
Ans: True
247. The net force on an object is in the same direction as the linear momentum of the object
Ans: False
248. The net force on an object is in the same direction as the object’s rate of change of linear momentum
Ans: True
249. If the force on an object is zero, then the object is at rest
Ans: False
250. If the net force on a moving object is zero, the object moves with constant linear momentum
Ans: True
PREAMBLE: An object moves with constant acceleration
251. The object moves along a straight line
Ans: False
252. The object moves at a constant speed in a circle
Ans: False
253. The path of the body is a conic section
Ans: True
254. The centripetal force on the object is zero
Ans: False
255. The derivative of an exponential function is always an exponential function.
Ans: True
256. Every polynomial equation has at least one real root.
Ans: False
257. A function is continuous if its left-hand and right-hand limits exist and are equal at a point.
Ans: True
258. If a function has a derivative, it must be continuous.
Ans: True
259. Every irrational number can be expressed as a non-repeating, non-terminating decimal.
Ans: True
260. The product of two rational numbers is always rational.
Ans: True
261. There are only two even prime numbers greater than 2 according to Fermat’s theorem.
Ans: False
262. The set of all algebraic numbers is uncountable.
Ans: False
263. sin 323° = sin 37°
Ans: False
264. Tan 253° = tan 43°
Ans: True
265. cos 312° = tan 60°
Ans: True
266. tan 300° = tan 60°
Ans: False
267. In a galvanic cell, oxidation occurs at the anode.
Ans: True
268. The standard hydrogen electrode (SHE) has an electrode potential defined as 1.00 V.
Ans: False
269. Electrolysis involves the use of an external power source to drive a non-spontaneous reaction.
Ans: True
270. In a Daniell cell, electrons flow from the zinc electrode to the copper electrode through the external circuit.
Ans: True
PREAMBLE: The function f(x) is an even function
271. f (x) = 4x + 8
Ans: False
272. F (x) = x2 + 1 / x2
Ans: True
273. f (x) = 2
Ans: True
274. f (x) = (x + 2)2
Ans: False
275. The presence of lipids in the chyme slows gastric emptying by stimulating the release of secretin.
Ans: False
276. Micelles are absorbed intact into the epithelial cells of the small intestine.
Ans: False
277. Intrinsic factor is essential for the digestion of vitamin B12 in the stomach.
Ans: False
278. Trypsin can activate enzymes that are not directly involved in protein digestion.
Ans: True
279. One condition for interference to occur is that the waves must be polarized on the same plane.
Ans: True
280. One condition for interference to occur is that the waves must have a constant phase and frequency difference.
Ans: False
281. One condition for interference to occur is that the waves must be unpolarised.
Ans: True
282. One condition for interference to occur is that the interfering waves must come from coherent sources.
Ans: True
283. A sharp curve needs a smaller centripetal force than a gentle curve, provided mass and tangential acceleration are the same.
Ans: False
284. A faster car needs a bigger centripetal force than a slow car, provided they have the same mass and move along circles of the same radius.
Ans: True
285. A bigger car needs a bigger centripetal force than a smaller car if both are to move with the same tangential velocity along circles of the same radius
Ans: True
286. If a car doubles its speed while maintaining the same circular path, the required centripetal force becomes twice as large.
Ans: False
287. Sulphur < Chromium < Rubidium < Potassium is the correct order of increasing atomic radius of the elements.
Ans: True
288. Fluorine < Oxygen < Cesium < Carbon is the correct order of decreasing electron affinities of the elements.
Ans: False
289. Molybdenum < Nickel < Cobalt is the correct order of the decreasing ionization energies of the elements.
Ans: False
290. Neon < Nitrogen < Phosphorus < Sodium is the correct order of increasing atomic radius of the elements.
Ans: True
291. The speed of light changes depending on the medium it passes through.
Ans: True
292. A moving object will stop unless a force acts on it.
Ans: False
293. The second law of thermodynamics states that heat flows spontaneously from cold to hot.
Ans: False
294. A free-falling object in a vacuum accelerates at approximately 9.8 m/s² on Earth.
Ans: True
295. The force of gravity between two objects depends only on their masses.
Ans: False
296. The total energy of an isolated system remains constant.
Ans: True
297. An object moving in a circular path at constant speed is accelerating.
Ans: True
298. The frequency of a wave is inversely proportional to its wavelength.
Ans: True
299. The amount of fissionable material that cannot sustain a chain reaction is known as mass. supercritical
Ans: False
300. The amount of fissionable material in which there is an increasing rate of fission is known as a supercritical mass.
Ans: True
301. The amount of fissionable material that can support a self-sustaining chain reaction is also known as a supercritical mass.
Ans: False
302. The amount of fissionable material just sufficient to maintain a self-sustaining nuclear chain reaction is known as a critical mass.
Ans: True
303. A line perpendicular to a tangent at a point on a curve is called a chord.
Ans: False
304. A tangent to a circle is perpendicular to the radius at the point of contact.
Ans: True
305. The gradient of a tangent to a curve at a point is equal to the derivative at that point.
Ans: True
306. A tangent line can intersect the curve if it touches at more than one point.
Ans: False
307. All prokaryotic cells lack a nucleus.
Ans: True
308. Mitochondria are the only organelles responsible for ATP production in eukaryotic cells.
Ans: False
309. DNA replication occurs in the cytoplasm of eukaryotic cells.
Ans: False
310. Ribosomes are found only in eukaryotic cells.
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