1. What is the complementary color of yellow?

(A) Blue

(B) Green

(C) Orange

(D) Red

ANS. (A) Blue

2. Which color deflection is highest among the colors obtained from the sun

(A) Red

(B) Orange

(C) Yellow

(D) Purple

ANS. (D) Purple

3. Used to make permanent magnets?

(A) soft iron

(B) Germanium

(C) Silicon

(D) Steel

ANS. (D) Steel

4. Which of the following substances has the highest specific heat?

(A) Ice

(B) sand

(C) water

(D) Iron

ANS. (C) Water

5. Inside the electric bulb -

(A) remains vacuum

(B) the air is full

(C) Inert gas is full

(D) Hydrogen is full

ANS. (C) Inert gas is full

6. In which order the fan, bulb etc. appliances are installed in the houses?

(A) in parallel order

(B) In order

(C) in any order

(D) in no order

ANS. (A) in parallel order

7. Whose unit is the Newton meter?

(A) acceleration

(B) force

(C) power

(D) Energy

ANS. (D) Energy

8. By which speed of Newton's law does the expression of force be obtained?

(A) First

(B) Second

(C) Third

(D) None

ANS. (B) II

9. Which mirror is used in the headlight of vehicles?

(A) concave

(B) convex

(C) plane

(D) Bisexual

ANS. (A) concave

10. Which of the following is a semi-driver?

(A) Silicon

(B) Germanium

(C) Iron

(D) (A) and (B) both

ANS. (D) (A) and (B) both