CBSE Past Year Paper Session (2019)Doc. Set- 1, Science Class 7 Class 7 Notes | EduRev

Science Class 7

Class 7 : CBSE Past Year Paper Session (2019)Doc. Set- 1, Science Class 7 Class 7 Notes | EduRev

The document CBSE Past Year Paper Session (2019)Doc. Set- 1, Science Class 7 Class 7 Notes | EduRev is a part of the Class 7 Course Science Class 7.
All you need of Class 7 at this link: Class 7

Ques 1: Fill in the blanks :- (1*5=5)
a. Amoeba digests its food in the ____________.
b. Changes in which new substances are formed are called _____________ changes.
c. Production of new individuals from the vegetative part of plant is called ___________.
d. The main excretory product in human beings is ______________
e. The bulb glows in a circuit only when the switch is in the ______________ position.

Ques 2: True or False:- (1*5=5)
a. The gall bladder temporarily stores bile.
b. Formation of manure from leaves is a physical change.
c. Anthers and filaments are two parts of pistil.
d. An electromagnet does not attract a piece of iron.
e. Chemical like chlorine and ozone are used to disinfect water.

Ques 3: Match the following:- (1*5=5)

Carbohydrate(i) a safety device to prevent short circuit.
Rose(ii) Ice and snow  
Fuse(iii) Block    the    pipe
Solid(iv) Sugar
Cooking oil or fats    (v) Cuttings


Very Short Answer Type Question (1*5=5)
Ques 4: Write the name of largest gland in our body.

Ques 5: What are the two parts of stamen?

Ques 6: Name the device used to measure the distance.

Ques 7: Name any two devices in which battery is used.

Ques 8: What are the main sources of water on earth?


Short Answer Type I (2*8=16)

Ques 9: What are ruminant animals? Given an example?

Ques 10: What is a chemical change? Give an example.

Ques 11: Write the difference between asexual and sexual mode of reproduction with example.

Ques 12: The distance between two stations is 240 Km. A train takes 4 hours to cover this distance. Calculate the speed of the train.

Ques 13: Name any two effects of electric current.

Ques 14: Explain, how groundwater is recharged?

Ques 15: What are decomposers? Name any two of them.

Ques 16: Write the function of Bar Screen in a waste water treatment plant.

Short Answer Type II (3*8=24)

Ques 17: Where is the bile produced and stored? Which component of the food does it help to digest?

Ques 18: When baking soda is mixed with lemon juice bubbles are formed with the evolution of gas. What type of change it is. Explain.

Ques 19: Why is transport of material necessary in a plant or an animal? Explain.

Ques 20: What is pollination? Explain two types of pollinations.

Ques 21: Write the difference between conductor and insulator. Give an example of each.

Ques 22: State the characteristics of the image formed by a plane mirror.

Ques 23: Explain the factors responsible for depletion of water table.

Ques 24: What is sewage? Explain why it is harmful to discharge untreated sewage into river.

Long Answer Type Question (5*4=20)

Ques 25: Draw a diagram of human excretory system and label the various parts.
For blind students (in place of diagram question)
a. Write different parts of excretory system.
b. Write the function of any three parts.

Ques 26: a. Define a straight line, circular and periodic motion.
b. Give any two examples of periodic motion.

Ques 27: a. State differences between a real and virtual image.
b. Which lens is used as reading glasses?
c. Give one use each of concave and convex mirror.

Ques 28: Explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere.

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