When a gun is fired, the bullet moves forward because:
a.
the barrel exerts no force
b.
air resistance acts forward
c.
the recoil of the gun acts backward as reaction
Correct Answer
d.
gravity pushes it forward
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Q2mcq
Which of the following observations best supports that liquids have a definite volume but no fixed shape?
a.
Air expands to fill the entire container
b.
A solid iron block retains its shape in any container
c.
A sponge changes its shape when squeezed
d.
Water takes the shape of its container but retains its volume
Correct Answer
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Q3mcq
Which of the following methods involves coating steel and iron with a layer of zinc to prevent rusting?
a.
Passivation
b.
Cathodic protection
c.
Electroplating
d.
Galvanisation
Correct Answer
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Q4mcq
Which among the following organic compounds is saturated?
a.
2-Bromopropene
b.
Propene
c.
Propyne
d.
Bromopropane
Correct Answer
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Q5mcq
Which of the following has straight-chain hydrocarbons?
a.
3-Methylpentane
b.
2-Methylpropane
c.
Butane
Correct Answer
d.
Isobutane Test Date 27/11/2025 Test Time 4:30 PM - 6:00 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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Q6mcq
The relation between electric energy, power and time is:
a.
Energy = Time – Power
b.
Energy = Power / Time
c.
Energy = Power × Time
Correct Answer
d.
Energy = Power + Time
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Q7mcq
The weight of a body on the moon is less than on Earth because:
a.
Gravitational acceleration on the moon is smaller
Correct Answer
b.
Mass of the body decreases on the moon
c.
The moon has no atmosphere
d.
Mass of the moon is equal to Earth’s mass
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Q8mcq
When we hit a table lightly, the sound produced is soft because the:
a.
frequency of vibration is low
b.
amplitude of vibration is small
Correct Answer
c.
speed of sound decreases
d.
wavelength becomes shorter
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Q9mcq
Which of the following statements is true about HIV transmission?
a.
HIV can be transmitted through aerosols.
b.
HIV can be transmitted through sexual acts.
Correct Answer
c.
HIV can be transmitted through mosquito bites.
d.
HIV can be transmitted through casual contact.
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Q10mcq
Why can tiny molecules like oxygen easily pass through the cell membrane, but not the big ones like starch or proteins?
a.
Small molecules have special energy to push through.
b.
The cell membrane is permeable to selective substances.
Correct Answer
c.
The cell membrane is completely solid.
d.
Big molecules have to break down for entry.
No explanation saved for this question yet.
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The distance between the pole and the centre of curvature of a convex mirror is + 40 cm. What will be the distance between the pole and the focus of this mirror?
a.
−20 cm
b.
−40 cm
c.
+ 20 cm
d.
+ 40 cm
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The average age of 51 students in a class is 24 years. If the age of the teacher is also included, the average age of the whole group becomes 25 years. The age (in years) of the teacher is:
a.
76
b.
75
c.
77
d.
71
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A train P going at the speed of 84 km/hr completely passes train Q of length 447 m, going in the same direction on parallel tracks, at 54 km/hr, in 4.5 minutes. How much time (in seconds) will P take to completely cross train R of length 287 m, going at 87 km/hr in the opposite direction?
a.
36
b.
39
c.
44
d.
34
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The cost of a washing machine is 40% less than the cost of a TV. If the cost of the washing machine increases by 80% and that of the TV decreases by 22%, then what is the percentage change in the total cost of 7 washing machines and 6 TVs?
a.
Increase by 20%
b.
Increase by 21%
c.
Decrease by 15%
d.
Decrease by 18%
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The ratio of the volume of a sphere to the total surface area of a hemisphere is 28 : 3. If the radii of the sphere and the hemisphere are equal, find the volume of the sphere (in cubic centimetres).
a.
38,208
b.
38,808
c.
38,542
d.
38,460
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Two trains, measuring 267 metres and 153 metres in length, are moving in the same direction at speeds of 162 km/hr and 36 km/hr, respectively. How long will it take for the faster train to completely overtake the slower one?
a.
18 seconds
b.
12 seconds
c.
17 seconds
d.
22 seconds
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After selling an article at a discount of 29%, the profit percentage obtained is 4%. What is the mark-up percentage (rounded off to two decimal places)?
a.
48.51%
b.
46.48%
c.
47.05%
d.
45.31%
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