What is the primary advantage of cross-pollination over self-pollination?
a.
Introduces genetic variations, which improves chances of survival in progeny
Correct Answer
b.
Requires less energy input for generating the progeny
c.
Produces progeny that is identical to parent
d.
Does not depend on pollinating agents for producing progeny
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Q2mcq
Which of the following pairs of human male chromosome is mismatched in size?
a.
Sex chromosomes
Correct Answer
b.
Twentieth pair autosomes
c.
First pair autosomes
d.
Thirteenth pair autosomes
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Q3mcq
A cyclist performing uniform circular motion throws an apple in his direction, the apple moves in a ____________.
a.
circular path as the cyclist
b.
straight line path opposite to the cyclist
c.
circular path opposite to the cyclist
d.
tangential path to the circular path at that point
Correct Answer
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Q4mcq
Which of the following is the common name for ethanol (C ₂ H ₅ OH)?
a.
Butyl alcohol
b.
Methyl alcohol
c.
Ethyl alcohol
Correct Answer
d.
Isopropyl alcohol
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Q5mcq
What are the products formed when an acid reacts with a metal hydrogen carbonate?
a.
Salt + Hydrogen gas
b.
Salt + Oxygen + Carbon
c.
Salt + Water + Carbon dioxide
Correct Answer
d.
Base + Hydrogen gas Test Date 08/12/2025 Test Time 12:45 PM - 2:15 PM Subject RRB Level 01 Stage I * Note Correct Answer will carry 1 mark per Question. Incorrect Answer will carry 1/3 Negative mark per Question. 1. Options shown in green color with a tick icon are correct. 2. Chosen option on the right of the question indicates the option selected by the candidate.
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Q14mcq
Which of the following is NOT present in animal cells?
a.
Chloroplast
Correct Answer
b.
Cytoplasm
c.
Nucleus
d.
Plasma membrane
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Q15mcq
Which of the following is the compound produced by the action of chlorine on dry slaked lime (Ca(OH)2)?
a.
common salt
b.
bleaching soda
c.
washing soda
d.
bleaching powder
Correct Answer
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Q16mcq
Which of the following metals is most likely to be found in the free state in nature due to its low reactivity?
a.
Zinc
b.
Gold
Correct Answer
c.
Iron
d.
Copper
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Q17mcq
Which of the following features is seen in every cell under a microscope?
a.
Chromosome
b.
Lysosome
c.
Cell membrane
Correct Answer
d.
Mitochondria
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Q18mcq
Which of the following non-metals is found liquid at room temperature?
a.
Nitrogen
b.
Phosphorous
c.
Iodine
d.
Bromine
Correct Answer
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Consider two triangles, ABC and XYZ. In triangle ABC, the base is 21 cm and the other two sides are 17 cm and 10 cm, respectively. In triangle XYZ, the base is two-thirds the base of triangle ABC and has an altitude of 5 cm. Find the sum of the areas of triangles ABC and XYZ.
a.
119 cm2
b.
108 cm2
c.
136.5 cm2
d.
124.5 cm2
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