Sample Test for Super 30 Entrance Exam - 45 Minutes
Sample questions from all the 3 subjects Physics, Chemistry and Mathematics for the students who are preparing for the Super 30 Entrance Examination. [No Negative Marking]
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1. The least distance of distinct vision for a young adult with normal vision is about
3 points
25 m
2.5 cm
2.5 m
25 cm
2. The commercial unit of electrical energy is
3 points
Joule
Watt
Watt hour
Kilowatt hour
3. An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be
3 points
100 W
25 W
75 W
50 W
4. An object weighs 60 N when measured on the surface of the earth. What would be its weight when measured on the surface of the moon ?
3 points
60 N
10 N
30 N
Zero
5. A man with a box on his head is climbing up a ladder. The work done by the man on the box is
3 points
Positive
Negative
Zero
Undefined
6. An ammeter is always connected in .......... and a voltmeter in ........... The suitable words, in order, for the blanks are
3 points
Series; series
Parallel; parallel
Parallel; series
Series; parallel
7. An ice cube is floating in a glass of water. What happens to the water level when the ice melts?
3 points
Rises
Falls
Remains same
First rises and then falls
8. Which of the following produces more severe burns?
3 points
Hot air
Sun rays
Boiling water
Steam
9. A fan produces a feeling of comfort during hot weather because
3 points
Fan supplies cold air
Our perspiration evaporates rapidly
Our body radiates more heat in air
Conductivity of air increases
10. The echo will be heard if the original sound reflected by an obstacle reaches our ears after
3 points
10 s
5 s
1 s
0.1 s
Image for Question Number 11
11. In the above figure (a), (b) and (c) respectively, indicate the point of focus in case of
3 points
The normal eye, the hypermetropic eye and myopic eye
The hypermetropic eye, the myopic eye and the normal eye
The normal eye, the myopic eye and the hypermetropic eye
The myopic eye, the normal eye and the hypermetropic eye
12. The momentum of a body increases by 10%. The increase in the kinetic energy will be
3 points
10%
20%
21%
19%
13. Sound waves in air are
3 points
Transverse
Longitudinal
Neither transverse nor longitudinal
Longitudinal at crest and transverse at troughs
14. An endothermic reaction is one in which
3 points
Heat is converted into electricity
Heat is absorbed
Heat is evolved
Heat is converted into mechanical work
15. Which of the following is used to extinguish electrical fires?
3 points
Water
Soda-acid fire extinguisher
Foam type fire extinguisher
Carbon tetra-chloride fire extinguisher
16. Which of the following element is not used for coating the surface of iron, to prevent rusting
3 points
Tin
Chromium
Platinum
Nickel
17. The neutron is an uncharged particle of mass
3 points
1 g
1 μg
1 mg
1 amu
18. Purest form of iron is
3 points
Cast iron
Wrought iron
Steel
None
19. Which of the following molecules contains a double bond?
3 points
N2
C2H4
PH3
CCl4
20. The chemical substance present in lime water is
3 points
Calcium chloride
Calcium oxide
Calcium hydroxide
Calcium nitrate
21. Which organic compound is used for the artificial ripening of fruits
3 points
Ethene
Ethane
Propane
All of the above
22. From amongst following metals which metal is poorest conductor of electricity
3 points
Pb
Ag
Hg
Al
23. The pH value of pure water can be increased by
3 points
Adding an acid
Removing some water
Adding a base
None of the above
24. The percentage of hydrogen in water is
3 points
33.33% H
30% H
18.88% H
11.11% H
25. The valence of Nitrogen in N2O5 is
3 points
+3
-3
+5
-5
26. A two digit positive number is such that the product of two digits is 24. When 45 is added to the number, then the digits interchange their places. Number is
3 points
46
38
24
None of the above
27. If hypotenuse of a right angled triangle is 17 cm & difference between the other two sides is 7 cm, then perimeter of triangle is
3 points
35 cm
38 cm
40 cm
43 cm
28. A picture 30 cm × 20 cm is placed in a frame with a border of uniform width. If area of the border is equal to the area of the picture, then width of border is
3 points
3 cm
5 cm
6 cm
7 cm
29. Number of points on x-axis at a distance 5 units from point (2, 4) is/are
3 points
0
1
2
More than two
30. Mean weight of a group of 10 boys is 28 kg & that of another group of 'n' boys is 35 kg. If combined mean weight of (10 + n) boys is 30 kg, then n is equal to
3 points
4
3
2
5
31. In a class of 52 student, 25% are rich & others are poor. There are 20 females in the class, of whom 55% are poor. How many rich males are there in the class?
3 points
13
4
39
9
32. If Rahul walk at 4 km/h, Rahul miss the train by 10 min. If Rahul walk at 5 km/h, Rahul reach 5 min. before the arrival of the train. How far Rahul walk to reach the railway station
3 points
5 km
7.5 km
30 km
330 km
33. Length of longest rod that can be placed in a room 40 m × 24 m × 18 m is
3 points
30√2 m
42 m
50 m
60 m
34. Ten years ago, a father was four times as old as his son. After 20 years, he will be twice as old as his son. Sum of their present ages is
3 points
55 years
75 years
87 years
95 years
35. Three identical coin are tossed. The probability that same outcome will appear on each of them is
3 points
1/8
1/4
1/2
3/8
36. Three friends Mr. White, Mr. Black & Mr. Red met in a cafeteria. "It is remarkable that one of us has white hair, another one has black hair & third one has red hair, though no one's name gives the colour of their hair", said the black haired person. "You are right", answered Mr. White, then
3 points
Mr. White's hair colour is black
Mr. Red's hair colour is black
Mr. Black's hair colour is red
Mr. Red's hair colour is red
37. If perimeter of a certain sector of a circle is equal to half of the circle of which it is a part, then circular measure of the angle of sector is
3 points
π/2
π
π + 2
π - 2
38. A printer numbers the pages of a book starting with 1 and uses 2893 digits in all. How many pages does the book have
3 points
1000
1021
1074
1075
39. Two friends take a piece of work for Rs. 960. One alone could do it in 12 days, the other in 16 days. If with the assistance of an expert they finish it in 4 days, then how much remuneration the expert should get
3 points
Rs. 700
Rs. 550
Rs. 400
Rs. 350
40. The speed of sound at moon is
3 points
330 m/s
330/6 m/s
330 x 6 m/s
Zero
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