Why are ultrasounds preferred for cleaning objects with complex shapes?
a.
They increase temperature of solution
b.
They produce magnetic effect
c.
They have very high speed in liquids
d.
Their high frequency dislodges dirt particles
Correct Answer
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Q2mcq
When light enters a glass prism from air at the first refracting surface, the light ray _________.
a.
Undergoes total internal reflection.
b.
Bends towards the normal, as it enters a denser medium
Correct Answer
c.
Bends away from the normal, increasing the angle of incidence
d.
Passes straight through without bending
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Q3mcq
In the following reaction, what colour change is observed? Fe + CuSO 4 → FeSO 4 + Cu
a.
Red to green
b.
Blue to red
c.
Blue to green
Correct Answer
d.
Green to blue
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Q4mcq
The ability of gases to be compressed easily is due to:
a.
large spaces between particles
Correct Answer
b.
lack of particles
c.
strong forces between particles
d.
high mass of particles
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Q5mcq
Which of the following best describes the key feature of the velocity–time graph for an object moving with uniform velocity?
a.
It is a straight line parallel to the time axis.
Correct Answer
b.
It is a curved line.
c.
It is a straight line parallel to the velocity axis.
d.
It is a straight line inclined to the time axis. Test Date 12/12/2025 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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Q28mcq
The total surface area of a right circular cylinder with radius of the base 12 cm and height 72 cm is: (take π = 22/7)
a.
528 cm2
b.
905 cm2
c.
6336 cm2
Correct Answer
d.
5430 cm2
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Q29mcq
a.
7
Correct Answer
b.
6
c.
9
d.
8
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Q30mcq
A dealer purchased a microwave for ₹57,000. He allows a discount of 64% on its marked price and still gains 38%. Find the marked price of the microwave.
a.
₹2,18,514
b.
₹2,18,310
c.
₹2,18,398
d.
₹2,18,500
Correct Answer
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Q31mcq
If a X m long train running at a speed of 41 m/sec crosses a railway platform in 34 sec. Find the value of X, if the length of the railway platform is 301 m.
a.
1093
Correct Answer
b.
1090
c.
1088
d.
1089
No explanation saved for this question yet.
Q32mcq
The arithmetic mean of the observations 90, 94, 44, 97, 46, 72, 62, 44 and 54 is:
a.
72
b.
67
Correct Answer
c.
57
d.
71
No explanation saved for this question yet.
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The average age of a father and his daughter is 27 years. The ratio of their ages 4 years hence from now, will be 23 : 8. Find the daughter's present age (in years).
a.
20
b.
12
c.
16
d.
15
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A camp has provisions for 55 persons for 14 days. In how many days will the same provisions finish off, if the strength of the camp is increased to 70 persons?
a.
10
b.
11
c.
14
d.
9
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₹3,246 is divided among A, B, C and D in such a way that the shares of A and B, B and C, and C and D are in the ratios of 4 : 5, 4 : 5, and 6 : 7, respectively. The share of A (in ₹) is:
a.
532
b.
612
c.
576
d.
508
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Pipe A can fill a tank in 32 minutes and pipe B can empty it in 48 minutes. If both the pipes are opened together, after how many minutes should pipe B be closed, so that the tank is filled in 60 minutes?
a.
40
b.
48
c.
36
d.
42
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Two banks, A and B, offered loans at 3.5% and 7% per annum, respectively. Ashish borrowed an amount of ₹4,40,000 from each bank. Find the positive difference (in ₹) between the amounts of simple interest paid to the two banks by Ashish after 4 years.
a.
61,600
b.
63,100
c.
61,100
d.
62,600
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In a right-angle triangle ABC, right angled at B, AB = 8 cm. A line AO is drawn which meets BC at O such that AO = OC = 10 cm. Find the area of triangle ABC.
a.
36 cm2
b.
64 cm2
c.
40 cm2
d.
50 cm2
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Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which is the letter-cluster pair that DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster.)
a.
PN – WB
b.
VS – CH
c.
SP – ZE
d.
HE – OT
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A, B, C, D, E, F and G are sitting around a circular table facing the centre. Only two people sit between D and A when counted from the left of A. C sits third to the left of G. E sits to the immediate right of G. E sits second to the left of D. F is an immediate neighbour of C. How many people sit between B and G when counted from the left of G?
a.
Three
b.
Four
c.
Two
d.
One
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