Competency Based Questions Class 10 Science

Question. Sardar Sarovar Dam is constructed on which river? 
(a) Ganga
(b) Sutluj
(c) Narmada
(d) Kaveri

Answer : C

Question. Expand the abbreviation GAP 
(a) Government Action Plan
(b) Ganga Action Plan
(c) Government Agency for Pollution Control
(d) Government Animal Protection Plant

Answer : B

Question. The pH range most conducive for life of fresh water plants and animals is 
(a) 6.5 – 7.5
(b) 2.0 – 3.5
(c) 3.5 – 7.0
(d) 9.0 – 10.5

Answer : A

Question. What are the five R’s to save the environment? 
(a) Reduce, Recycle, Reuse, Repurpose, Refuse
(b) Replenish, Reduce, Reuse, Revise, Remanage
(c) Reconstruct, Recycle, Reduce, Refund, Repurpose
(d) Reduce, Recycle, Remove, Refuse, Reproduce

Answer : A

Question. The Indira Gandhi Canal has brought greenery to considerable areas of 
(a) Gujarat
(b) Rajasthan
(c) Bihar
(d) Madhya Pradesh

Answer : B

Question. Environment Day falls on 
(a) 28th February
(b) 23rd March
(c) 5th June
(d) 16th August

Answer : C

Question. Which gas is formed, when fossil fuels are burnt in insufficient air (oxygen)? 
(a) Carbon dioxide
(b) Carbon monoxide
(c) Both CO₂ and CO
(d) Neither CO2 nor CO

Answer : B

Question. Which environmental problem is associated with the construction of high rise dams? D
(a) A large number of human settlements are submerged in the water.
(b) It contributes to deforestation and loss of biodiversity.
(c) It involves the spending of huge amounts of money.
(d) All the above.

Answer : D

Question. What is the purpose of rain-water harvesting? 
(a) To hold rain water on the surface of the earth.
(b) To recharge ground water.
(c) To use water for the irrigation of crops.
(d) To rear fish

Answer : B

(a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
(b) Both Assertion (A) and Reason (R) are true but Reason (R) is not the correct explanation of Assertion (A).
(c) Assertion (A) is true but Reason (R) is false.
(d) Assertion (A) is false but Reason (R) is true.

Question. Assertion (A): Wildlife should be conserved. 
Reason (R): Human activities cause several plants and animals to extinct.

Answer : A

Question. Assertion (A): Reuse is better than recycle. 
Reason (R): Recycle prevents environmental pollution.

Answer : C

Question. Assertion (A): The development which can be maintained for a long time without undue damage to the environment is called sustainable development. 
Reason (R): Its main objective is to provide the economic well being to the present and future generation.

Answer : A

Question. Assertion (A): Chipko Andolan was done by women of Reni village. 
Reason (R): Chipko Andolan was done to protect wild life.

Answer : C

Question. Assertion (A): Coliform is a group of bacteria found in human stomach. 
Reason (R): Presence of coliform in water indicates contamination by disease causing micro-organisms.

Answer : D

Question. Assertion (A): Water is a valuable resource. 
Reason (R): Turn off the taps when not in use.

Answer : B

Question. Assertion (A): Dams are the barriers constructed across the rivers to hold the water. 
Reason (R): These dams ensure the storage of adequate water for different uses.

Answer : A

Question. Assertion (A): Inexhaustible natural resources are present in limited amount in nature. 
Reason (R): Inexhaustible natural resources are Renewable and replenishable.

Answer : D

Question. Assertion (A): We need to conserve natural resources. 
Reason (R): Natural resources are limited.

Answer : A

Question. Assertion (A): Coal is a combustible organic fuel. 
Reason (R): It occurs inside the volcanoes.

Answer : C

Case Study Based Questions

Read the following and answer any four questions from (i) to (v): 

Question. Reusing gold jars for storage is simple way to? 
(a) Recycled waste
(b) Reduce waste
(c) Residual management
(d) Reuse waste

Answer : C

Question. Match Column I with Columns II. 

(a) 1-D; 2-A; 3-B; 4-C
(b) 1-C; 2-B; 3-A; 4-D
(c) 1-B; 2-C; 3-D; 4-A
(b) 1-A; 2-D; 3-C; 4-B

Answer : A

Question. The three R’s that will help us to conserve natural resources for long term use are: 
(a) recycle, regenerate, reuse
(b) reduce, regenerate, reuse
(c) reduce, reuse, redistribute
(d) reduce, recycle, reuse

Answer : D

Question. The following is an example of reusing: 
(a) Using less water when you brush your teeth.
(b) Using less water when you brush you teeth.
(c) Bringing cans back to a recycling center.
(d) Washing zip top bags after use so they can be used again.

Answer : D

Question. When recycling a plastic water bottle, what should you do with the cap? 
(a) The cap goes into a garbage can and the bottle goes in a recycling bin.
(b) Screw the cap back on the bottle, then put the bottle and cap in a recycling bin.
(c) Screw the cap back on the bottle, then put the bottle and cap in the garbage can.
(d) Recycle the cap separately.

Answer : A

Read the following and answer any four questions from (i) to (v): 

Question. Which is not a source of fresh water? 
(a) Glaciers and ice sheets
(b) Groundwater
(c) Surface run off
(d) Ocean

Answer : D

Question. Locate and name the water reservoirs in figure A and B. 
(a) A-Pond, B-Underground water body
(b) A-River, B-Pond
(c) A- Underground water body, B- lake
(d) A- Lake, B- Wetland

Answer : A

Question. “India has more than 17% of the world’s population, but has only 4% of world’s renewable water resources with 2.6% of world’s land area”. Based on the above facts, identify which of the following statements are correct: 
A. India has lesser fresh water availability per unit land area compared to the world average.
B. India has higher fresh water availability per unit land area compared to the world average.
C. India has lesser per capita fresh water availability compared to the world average.
D. India has higher per capita fresh water availability compared to the world average.
(a) Statements A and C are correct, while B and D are incorrect.
(b) Statements A and D are correct, while B and C are incorrect.
(c) Statements B and C are correct, while A and D are incorrect.
(d) Statements B and D are correct, while A and C are incorrect.

Answer : C

Question. Which has an advantage over the other? 
(a) A has advantage over B.
(b) B has advantage over A.
(c) A and B both provide equal advantages.
(d) None of the above

Answer : B

Question. Pick the wrong statement about groundwater. 
(a) It is turbid.
(b) It is odourless.
(c) It is free from pathogens.
(d) It is coloured.

Answer : D