Q1. What are the elements which are liquids at room temperature and standard pressure?
Select the correct answer using the codes given below:
(a) 2 and 3 only
(b) 2, 3 and 4
(c) 2 and 4 only
(d) 1 and 3 only
Q2. The freezer in a refrigerator is located at the top section so that
(a) the entire chamber of the refrigerator is cooled quickly due to convection.
(b) the motor is not heated
(c) the heat gained from the environment is high
(d) the heat gained from the environment is low
Q3. Consider the following statements :
Hypermetropia is a defect of vision in which
1. a person cannot see the distant objects clearly.
2. a person cannot see the near objects clearly.
3. the near point of the eye gets shifted away from the normal position.
4. the far point of the eye gets shifted towards the eye.
Which of the statements given above are correct?
(a) 1 and 3
(b) 2 and 4
(c) 1 and 4
(d) 2 and 3
Q4. A car is moving on a road and rain is falling vertically. Select the correct answer
(a) The rain will strike the wind screen only
(b) The rain will strike the front screen only
(c) The rain will strike both the screens
(d) The rain will not strike any of the screens
Q5. When iron is left exposed in open air, it gets rusted.Which constituent(s) of air is /are responsible for rusting iron?
1. Oxygen gas present in air
2. Moisture present in air
3. Carbon dioxide gas present in air
Select the correct answer using the codes given below :
(a) 1 only
(b) 2 only
(c) 1 and 2
(d) 2 and 3
Q6. In plants, which one of the following tissues is dead ?
Q7. Match List-I with List-II and select the correct answer from the codes given below:
A. Acceleration 1. Jule
B. Electric current 2. Newton second
C. Work done 3. Newton
D. Impulse 4. Metre per sec square
A B C D
(a) 1 2 3 4
(b) 2 3 4 1
(c) 4 3 1 2
(d) 3 4 1 2
Q8. The natural dye present in turmeric is known as
(c) Methyl orange
Q9. Contaminated water can cause the following diseases except which one of the following?
(a) Hepatitis A
Q10. The main thinking part of the brain is
Q11. Which one among the following is the hardest part of our body?
(a) Skull bones of head
(b) Thumb nails
(c) Enamel of teeth
(d) Spinal vertebra
Q12. Lysosome arises from
(a) endoplasmic reticulum
(b) golgi apparatus
Q13. Among the following radiations, which has the highest energy?
Q14. A student finds the writing on the black board as blurred and unclear when sitting on the last desk in a classroom. However, he sees it clearly when sitting on the front desk. Student suffers from a vision defect known as—
Q15. When a ship floats on water
(a) it displaces no water
(b) the mass of water displaced is equal to the mass of the ship
(c) the mass of water displaced is lesser than the mass of the ship
(d) the mass of water displaced is greater than the mass of the ship