CBSE class 9 Science Quiz and Answers | CBSE class 9 Science Quiz

Questions

161 Apiculture deals with

A Bee Keeping

B Rearing Silk Moths

C Rearing Pigs

D Rearing Cows and Buffaloes

View Answer

Answer: Bee Keeping

162 Which of the following is not a type of biotic stress?

A frost

B nematodes

C diseases

D insect

View Answer

Answer: frost

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163 Which is the oldest breeding method?

A selection

B introduction

C hybridization

D mutation

View Answer

Answer: introduction

164 Which of the following is an incorrect statement regarding improvement in crop production?

A Tallness is desired in cereals.

B Profuse branching is good for fodder crops

C Variety resistance to biotic stress is a good factor to improve crops.

D Shorter duration of crop from sowing to harvesting is better option.

View Answer

Answer: Tallness is desired in cereals.

165 Which of the following is not included in 'organic farming'?

A chemical fertilizers

B green manures

C compost and vermi-compost

D crop rotation

View Answer

Answer: chemical fertilizers

166 Cereals largely fulfill which of the following energy requirement?

A Carbohydrates

B Minerals

C Proteins

D Node

View Answer

Answer: Carbohydrates

167 Which one of the following species of honey bee is an Italian species?

A Apis mellifera

B Apis cerana indica

C Apis dorsata

D Apis florae

View Answer

Answer: Apis mellifera

168 Which one is not a source of carbohydrate?

A Gram

B Sorghum

C Rice

D Millets

View Answer

Answer: Gram

169 The SI unit of wavelength is

A metre

B s-1

C metre/second

D Hertz

View Answer

Answer: metre

170 What type of sound waves can propagate in solids ?

A Longitudinal only

B Transverse only

C Either longitudinal or transverse

D Non mechanical waves only

View Answer

Answer: Either longitudinal or transverse

171 The force of attraction between two bodies (each having mass of 1kg) are kept at a distance of 1m w.r.t. each other is:

A 6.7 x 10 -11 N

B 980 N

C 9.8 N

D 6.7 N

View Answer

Answer: 6.7 x 10 -11 N

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