1. Which of the following crops is used for the production of bio fuel?

(a) Sugarcane

(b) Maize

(c) Jatropha

(d) All these

ANS. (D) All these

2. The coil of an electric room heater is called ........

(a) filament

(b) Foil

(c) Element

(d) Spring

ANS. (C) Element

3. What type of wave is produced in string of stringed instruments (guitar)?

(a) longitudinal

(b) transverse

(c) surface

(d) fixed

ANS. (B) Transverse

4. The transparent object by which we call the object ........:.

(a) Can not see at all

(b) can clearly see

(c) can see, but not very clearly

(d) No option is correct

ANS. (B) can clearly see

5. Diseases like dysentery and malaria are caused by …….

(a) virus

(b) bacteria

(c) Ekkoshi (protozoa)

(d) Fungi

ANS. (C) Ekkoshi (Protozoa)

6. The process of taking oxygen-rich air into the body is called.

(a) Commendation

(b) Expiration

(c) enforcement

(d) exploration

ANS. (A) Commendation

7. Normal ........... oxides are acidic in nature.

(a) metal

(b) non-metal

(c) Both metal and non-metal

(d) Neither metal nor non-metal

ANS. (B) Nonmetal

8. A thin wire that gives light to a bulb is called ........

(a) terminal

(b) tip

(c) Source

(d) filament

ANS. (D) filament

9. Which of the following is the reproductive organ of a plant?

(a) Root

(b) stem

(c) flowers

(d) Fruit

ANS. (C) Flowers

10. When a disease-carrying microbe enters our body, the body produces microbe to fight.

(a) antigen

(b) antimicrobial

(c) antibiotic

(d) anti allergenic

ANS. (B) antimicrobial