CBSE Class 7 - Our Environment - Ch 4- Air (NCERT Solution)

 Air

Atmosphere Composition
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Class 7 - Geography - NCERT Chapter 4 Solution

Q1: What is atmosphere?

Answer: The thick blanket of air (mixture of gases) around the earth is called atmosphere.


Q2: Which two gases make the bulk of the atmosphere?

Answer: Nitrogen and Oxygen


Q3: Which gas creates green house effect in the atmosphere?

Answer: Ozone, Carbon DiOxide.


Q4: What is weather?

Answer: The state or condition of atmosphere at a particular time and place is called weather.


Q5: Name three types of rainfall?

Answer: Orographic, convectional and cyclonic rain.

CBSE Class 10 - Hindi-B- SA1- Sample Question Paper (2011-12)

CBSE Class 10 - Hindi-B- SA1- Sample Question Paper (2011-12)

CBSE Class 7 - Science - Multiple Choice Questions

Class 7 - Science - Multiple Choice Questions

(MCQs asked in SA1 Q Paper)

Q1: Which part of the plant takes in carbon dioxide from the air for photosynthesis?

(a) Root Hair
(b) Stomata
(c) Leaf veins
(d) Sepals


Q2: Which animal does not yield wool?

(a) Yak
(b) Camel
(c) Goat
(d) Woolly dog


Q3: On Amoeba, food procuring structure is

(a) tongue
(b) tentacle
(c) pseudopodium
(d) radula


Q4: An iron weight at 45 degree Celsius is dipped in a bucket containing water at 45 degree Celsius. The heat will

(a) flow from water to iron weight
(b) flow from iron weight to water
(c) not flow between them
(d) flow and increase the temperature


Q5: A solution turns red litmus paper blue. If a drop of phenolphthalein is added to it.

CBSE Class 10 - Science- SA1- Sample Question Paper (2015-16)

CBSE Class 10 - Science- SA1- Sample Question Paper (2015-16)

CBSE Class 10 - English- SA1- Sample Question Paper (2015-16)

CBSE Class 10 - English- SA1- Sample Question Paper (2015-16)

CBSE Class 10 - Maths - SA1- Sample Question Paper (2015-16)

CBSE Class 10 - Maths - SA1- Sample Question Paper (2015-16)
Paper sent by one of the reader. Tough One.

CBSE Class 9 - Maths - SA1 -Sample Question Paper (2015-16)

CBSE Class 9 - Maths - Sample Question Paper
Paper sent by one of the reader. Good for practice.