Q.1. Which of the following is not a sexually transmitted disease?
(a) Syphilis
(b) Gonorrhea
(c) Scurvy
(d) Hepatitis B
Ans. (c)
Q.2. Velocity of sound in air does not change with the change of-
(a) temperature of air
(b) pressure of air
(c) moisture content in air
(d) wind in the direction of propagation of sound
Ans. (b)
Q.3. In which of the following organs of the human body is Bone Tibia found?
(a) Skull
(b) Leg
(c) Ankle-bine
(d) Mouth
Ans. (b)
Q.4. The device which converts AC to DC is -
(a) oscillator
(b) simplifier
(c) rectifier
(d) None of these
Ans. (c)
Q.5. Which of the following metals is used for the manufacture of heating agents in electric iron?
(a) Nickel
(b) Chromium
(c) Nichrome
(d) Tungsten
Ans. (c)
Q.6. When the main switch of the house is put off it disconnects the-
(a) live wire only
(b) live wire and the earth wire
(c) live wire and the neutral wire
(d) Earth wire and the neutral wire
Ans. (c)
Q.7. Yellow spots on citrus leaves is due to the deficiency of -
(a) zinc
(b) magnesium
(c) boron
(d) iron
Ans. (b)
Q.8. In plants water is absorbed by the root hair by a process called-
(a) transportation
(b) respiration
(c) perspiration
(d) osmosis
Ans. (d)
Q.9. The element which is required by the plant in large quantity is-
(a) calcium
(b) nitrogen
(c) phosphorus
(d) sulphur
Ans. (b)
Q.10. Mineral constituent of chlorophyll is -
(a) iron
(b) magnesium
(c) calcium
(d) potassium
Ans. (b)
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