Sample paper science

Sample Paper
Class 7 Science
Sample Paper 5 | Class 7 Science

Class 7 Science

Sample Paper – 5

MAX. MARKS: 80 DURATION: 2 HRS

General Instructions:

(1) All questions are compulsory.

(2) This question paper contains 23 questions divided into four Sections A, B, C and D.

(3) Section A comprises 3 Questions (Fill in the Blanks, Multiple choice questions and True and False) of 20 marks.

(4) Section B comprises 8 questions of 2 marks each.

(5) Section C comprises 8 questions of 3 marks each.

(6) Section D comprises 4 questions of 5 marks each.

SECTION – A

Question 1:

FILL IN THE BLANKS: (1 x 10 = 10)

1. Cell is enclosed by a thin outer boundary called __________.

2. __________ is largest gland in the body.

3. The raw material necessary for photosynthesis is __________, __________, ___________ and __________.

4. __________ are single-celled organisms.

5. __________ carry blood from all parts of the body back to the heart.

6. __________ is the reproductive part of a plant.

7. The distance-time graph for the motion of an object moving with a contant speed is a __________.

8. A current carrying coil of an insulated wire wrapped around a piece of iron is called an __________.

9. An organism which provides nutrition to other organism is called __________.10. Waste water released by houses is called __________.

Question 2:

Choose the correct answer: (1 X 5 =5)

1. Colours of phenolphthalein indicator in acidic and basic medium, respectively are

(a) pink and colourless

(b) colourless and pink

(d) red and blue

2. Yeast are used to make

(a) curd

(b) wine and beer

(d) both (b) and (c)

3. In a bulb there is a thin wire called

(a) filament

(b) coil

(d) fuse wire

4. Which gases are involved in breathing?

(a) Oxygen and nitrogen

(b) Oxygen and carbon dioxide

(d) carbon dioxide and nitrogen

5. During exhalation, the ribs

(a) move outwards

(b) move downwards

(d) do not move at all

Question 3:

Write ‘True’ or ‘False’: (1 X 5 = 5)

1. Carbon dioxide is released during photosynthesis.

2. Arteries carry blood from the heart to all parts of the body.

3. Leaf is the productive part of plant.

4. Light travels in straight line.

5. Solar energy is converted into chemical energy during photosynthesis.

SECTION – B (2 Marks each)

Question 4:

Define parasites.

Question 5:

If the filament of Spirogyra is broken into fragments. What will you observe?

Question 6:

What are indicators?

Question 7:

How do cacti reproduce?

Question 8:

What are spiracles?

Question 9:

What is the function of pulmonary artery?

Question 10:

What is blue vitriol?

Question 11:

Differentiate between a uniform and non-uniform motion.

Section – C (3 marks each)

Question 12:

The terms sewage, sewers and sewerage are interlinked with each other. Can you explain, how?

Question 13:

Why we wear dark coloured clothes in winter and light coloured clothes in summer?

Question 14:

Why is heart known as the pumping organ of the human body?

Question 15:

How does a heating element work in an electric heater?

Question 16:

Magnesium ribbon bums in air and changes to white substance, magnesium oxide. Now, dissolve magnesium oxide in water.

(a) What type of change takes place? Give reason in support of your answer.

(b) Express the change in the form of equation.

Question 17:

A child was stung by a wasp. A person suggested applying paste of baking soda as remedy. Why?

Question 18:

Why do we often sneeze when we inhale a lot of dust-laden air?

Question 19:

Why the word ambulance is written laterally inverted on ambulance vehicle?

Section – D (5 marks each)

Question 20:

Explain why there is no waste in a forest.

Explain why forest is called “the dynamic living entity”?

Question 21:

What is the effect of China rose petals on acidic and basic solution.

A bicycle tube overfilled with air may burst’. Give reason.

Question 22:

Salma takes 15 minutes from her house to reach her school on a bicycle. If the bicycle has a speed of 2 m/s, calculate the distance between her house and the school.

Question 23:

(a) What is vegetative propagation?

(b) What are methods of producing new plants using stem?

**********

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