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Directions (Q. 1 - 7): Solve the following questions:
1. The chemical which is used in art and craft and can cause anemia and leukemia is ____
(A) Benzene (B) Dioxine (C) Phthalate (D) Aldrin
Show Answer
Answer: A
2. What are the signals that inform the operating system that some activity has taken place, called ____
(A) Informers (B) Interrupts (C) Events (D) Handlers
Answer: C
3. A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum :
(A) just after it is dropped (B) when it is just on the half-way (C) just before it touches the ground (D) when it touches the ground
4. Which acid is stored in batteries ?
(A) Sulphuric acid (B) Nitric acid (C) Hydrochloric acid (D) Acetic acid
5. The inert gas which is substituted for nitrogen in the air used by deep sea divers for Breathing is :
(A) Neon (B) Argon (C) Krypton (D) Helium
Answer: D
6. Who invented aeroplane ?
(A) Orville Wright and Wilbur Wright (B) Sir Frank Whittle (C) Michael Faraday (D) Christian Huygens
7. Hydraulic machines work on the Principle of ____
(A) Newton’s Law (B) Joules Law (C) Pascal’s Law (D) Floatation Law