10th science Chapter 15 objective English medium

For chapter 14 click here 👇👇

Chapter 14 sources of energy

By vikas lodhi

VENUS BHATNAGAR SCIENCE INSTITUTE INDORE 

                      CHAPTER - 15 

                ( OUR ENVIRONMENT ) 

Question 1.
An environment consists of:
(a) Abiotic components
(b) Biotic components
(c) Both
(d) Not certain
Answer:
(c) Both

Question 2.
Waste could be:
(a) Abiotic components
(b) Biotic components
(c) Both
(d) Not certain
Answer:
(c) Both

Question 3.
Reduction of waste is important to:
(a) Make environmental balance proper.
(b) Make nearby beautiful
(c) waste can be transformed to useful products.
(d) Not clear
Answer:
(d) Not clear

Question 4.
Which one among following is non-biodegradable substance?
(a) Metal
(b) Wood
(c) Water
(d) Urea
Answer:
(a) Metal

Question 5.
Which among the following is a biodegradable waste?
(a) Wood
(b) Teflon pots
(c) Plastic cup
(d) Glass Cups
Answer:
(a) Wood

Question 6.
Most convenient ways of waste management is:
(a) 3 R : Reduce, reuse, recycle principle
(b) Production
(c) Use ban
(d) None
Answer:
(a) 3 R : Reduce, reuse, recycle principle

Question 7.
Which one is not a primary consumer?
(a) Grasshopper
(b) Deer
(c) Ant
(d) Leech
Answer:
(b) Deer

Question 8.
Humans are:
(a) Primary consumers
(b) Secondary consumers
(c) Top consumers
(d) All
Answer:
(d) All

Question 9.
Energy while going up in a trophic level is:
(a) Increased
(b) Decreased
(c) Remain same
(d) Can’t predict
Answer:
(b) Decreased

Question 10.
Pesticides are used to:
(a) Develop new varieties of crops.
(b) Kill unwanted plants.
(c) Kill insects and enrobes attacking crops.
(d) Save crops from birds.
Answer:
(c) Kill insects and enrobes attacking crops.

Question 11.
In a marine ecosystem producers are:
(a) Plants
(b) Sand
(c) Water
(d) Fishes
Answer:
(d) Fishes

Question 12.
Top consumer in a crop field is:
(a) Rat
(b) Hawk
(c) Snake
(d) (a) and (b)
Answer:
(b) Hawk

Question 13.
Effect of bio-magnification is maximum in:
(a) Primary consumers
(b) Secondary consumers
(c) Top consumers
(d) All of these
Answer:
(c) Top consumers

Question 14.
Which one of the following is artificial ecosystem?
(a) Jungle
(b) Town
(c) A pond
(d) Mountain
Answer:
(b) Town

Question 15.
Cockroach is a:
(a) Producer
(b) Primary consumer
(c) Secondary consumer
(d) Decomposer
Answer:
(d) Decomposer

Question 16.
Energy source of an ecosystem is:
(a) Producers
(b) Sunlight
(c) Top consumer
(d) Atmospheric gases
Answer:
(b) Sunlight

Question 17.
Link between primary and secondary consumers are:
(a) Autotrophs
(b) Omnivorous
(c) Carnivorous
(d) Herbivorous
Answer:
(a) Autotrophs

Question 18.
What is CFC?
(a) A waste
(b) A coolant gas
(c) A bakery product
(d) An organization
Answer:
(b) A coolant gas

Question 19.
UNEP stands for:
(a) United Nations Environment Programme.
(b) United Nations Entertainment Programme.
(c) United Nations Excellence Programme.
(d) Unlimited Nations Excellence Programme.
Answer:
(a) United Nations Environment Programme.

Question 20.
How many atoms of oxygen compose an ozone molecule?
(a) 1
(b) 2
(c) 3
(d) 4
Answer:
(c) 3

§ THANKS FOR READING §

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