An object is placed at infinity in front of a concave mirror. Where is the image formed?
a.
At the pole (P)
b.
At the centre of curvature (C)
c.
Behind the mirror
d.
At the principal focus (F)
Correct Answer
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Q2mcq
What is the atomic mass of magnesium?
a.
6
b.
1
c.
24
Correct Answer
d.
14
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Q3mcq
Which method is used to extract metals that are high in the reactivity series?
a.
Roasting
b.
Electrolytic reduction
Correct Answer
c.
Calcination
d.
Heating with carbon
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Q4mcq
The emergent ray from a rectangular glass slab is:
a.
Bent towards the normal
b.
Parallel to the incident ray
Correct Answer
c.
Bent away from the normal
d.
Perpendicular to the incident ray
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Q5mcq
If the stamens of a flower are non-functional, which process will NOT be done?
a.
Pollen production
Correct Answer
b.
Ovule development
c.
Bud protection
d.
Fruit dispersal Test Date 30/12/2025 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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Q13mcq
As the chest cavity becomes larger, air is __________ into the lungs and fills the expanded __________.
a.
pulled; alveoli
Correct Answer
b.
forced; ribs
c.
absorbed; diaphragm
d.
pushed; bronchi
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Q14mcq
Growing wheat and mustard simultaneously on the same piece of land is an example of which of the following?
a.
Mixed cropping
Correct Answer
b.
Monoculture cropping
c.
Crop rotation
d.
Jhum cultivation
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Q15mcq
The slope of a distance-time graph represents the:
a.
speed of the object
Correct Answer
b.
distance covered
c.
force on the object
d.
acceleration of the object
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Q16mcq
Select the correct pair of example of 'sublimation'.
a.
Dry ice and salt
b.
Salt and camphor
c.
Camphor and napthalene
Correct Answer
d.
Sugar and napthalene
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Q17mcq
A 100 W bulb is connected to a 220 V supply. The current through the bulb is approximately:
a.
1.1 A
b.
2.2 A
c.
0.91 A
d.
0.45 A
Correct Answer
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