Question

1. Choose the correct Answer: 10 x ½ =5

a. Which is not provided by chemical fertilizers to the soil

i). Nitrogen ii). Humus

iii). Potassium iv). Phosphorus

b. The fungus that is commonly used in bakery and beverage industries are

i). Penicillium ii). Rhizopous

iii). Agaricus iv). Yeast

c. Which fibre is used as artificial wool

i). Rayon ii). Nylon

iii). Acrylic iv). Cotton

d. Metals reacts with acids to produce respective salt with evolution of

i). oxygen gas ii). Nitrogen gas

iii). Hydrogen gas iv). carbon dioxide gas

e . Petroleum is separated by using the difference in

i). ignition temperature ii). melting point

iii). boiling point iv). freezing point

f. LPG means

i). liquefied petroleum gas ii). liquefied petrol gas

iii). liquefied petroleum godown iv). light petrol gas

g. The force exerted by a charged body on another charged or uncharged

body is called

i). Electrostatic force ii). Gravitational force

iii). Contact force iv). Non-contact force

h. Static friction is less than

i). sliding friction ii). rolling friction

iii). composite friction iv). none of these

i. Which of the following have lowest frequency

i). baby girl ii). woman

iii). baby boy iv). man

j. The celestial body that appears red

i). asteroids ii). Mars

iii). Saturn iv). Mercury​

Answer 1

Answer:

1.

a. ii). Humus

b. iv). Yeast

c. iii). Acrylic

d. iii). Hydrogen

e. iii). Boiling point

f. i). Liquefied Petroleum Gas

g. i) Electrostatic force

h. iv). none of these

i. iv). man

j. ii). Mars