CBSE Class 10 Science Quiz and Answers | CBSE Class 10 Science Quiz

Questions

161 We should reduce the use of the plastic bags, bottles etc. because:

A They are not durable

B They are non-biodegradable

C They are made of toxic materials

D They react with the atmospheric gases

View Answer

Answer: They are non-biodegradable

162 Every food chain in the ecosystem begins with………. which are the original source of food.

A Producers

B Herbivores

C Saprophytes

D Parasites

View Answer

Answer: Producers

Article and Schedule Quiz	Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

163 If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be:

A 1 J

B 0.01 J

C 10 J

D 0.1 J

View Answer

Answer: 1 J

164 The substance which is chiefly responsible for the depletion of ozone layer is:

A CFCs

B O3

C CH4

D DDT

View Answer

Answer: CFCs

165 The quality of environment can be improved by-

A Conservation

B Erosion

C Deforestation

D Overuse of natural environment

View Answer

Answer: Conservation

166 Which of the following does not lead to the depletion of groundwater?

A Process of afforestation

B Process of deforestation

C Establishing thermal power plants

D Cultivation of high yielding varieties of crops

View Answer

Answer: Process of afforestation

167 Sardar Sarovar Dam is situated on river:

A Ganga

B Narmada

C Yamuna

D Godavari

View Answer

Answer: Narmada

168 A chemical reaction does not involve:

A Formation of new substances having entirely different properties than that of the reactants

B Breaking of old chemical bonds and formation of new chemical bonds

C Rearrangement of the atoms of reactants to form new products

D Changing of the atoms of on element into those of another element to form new products

View Answer

Answer: Changing of the atoms of on element into those of another element to form new products

169 Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:

A Lactic acid

B Carbon dioxide

C Hydrochloric acid

D Fat

View Answer

Answer: Lactic acid

170 The plant hormone which triggers the fall of mature leaves and fruits from the plant body is:

A Abscisic acid

B Cytokinin

C Auxin

D Gibberellin

View Answer

Answer: Abscisic acid

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test	Start Test!
SSC MTS Mock Test	Start Test
IBPS CLERK MOCK TEST	Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH)	Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi)	Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH)	Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH)	Start Test!
IB Security Assistant Mock test 1 (english)	Start Test!
UP POLICE CONSTABLE MOCK TEST 1	Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI)	Start Test!