Quiz about Grade 7 asset practice

Question 1

The figure below shows a diagrammatic representation of molecules of two different gases kept in either side of a tap.

The tap is open, which of the following diagrams would represent BEST the diagram after sometime?

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 2

Manu wanted to find out if his heartbeat rate changed after he ran. These are the things he recorded. Which of them is NOT required for him to find the answer?

Accepted Answer

his body temperature after running

Answer

the number of heartbeats per minute before running

Answer

the number of heartbeats per minute immediately after running

Answer

all the above three are required.

Question 3

Shown alongside is a pendulum clock. What are the different types of motion that you would observe in such a clock?

Accepted Answer

circular motion & oscillatory motion

Answer

rectilinear motion & circular motion

Answer

oscillatory motion & rectilinear motion

Answer

rectilinear, oscillatory & circular motion

Question 4

In the diagram below Circle P represents compounds/mixtures that contain oxygen and are edible and Circle Q represents compounds/mixtures that contain both hydrogen and oxygen. In the region R, the region of intersection of circles P and Q, which of the following can be placed?

Accepted Answer

washing Powder

Answer

sugar

Answer

wax

Answer

common Salt

Question 5

The structure shown here is called a greenhouse. Greenhouses have glass panels that let in light but keep heat from escaping. In which regions would greenhouses of this type be used to grow plants?

Accepted Answer

regions that are very cold

Answer

regions that are very hot

Answer

regions that are very humid

Answer

regions that are very dry

Question 6

When solid candle wax is heated, it becomes liquid. The molecules

Accepted Answer

absorb heat & move apart

Answer

absorb heat & come together

Answer

release heat & move apart

Answer

release heat & come together

Question 7

Given below are the ball-and-stick models of a few molecules. Which one of them represents a water molecule?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 8

Which gas will you fill in the empty bubble here?

Accepted Answer

A. Nitrogen

Answer

B. Oxygen

Answer

C. Carbon dioxide

Answer

D. Water vapour

Question 9

Adil arranges a circuit using five interconnected rings as shown in the figure. The bulb glows in this arrangement

Which ring(s) should Adil remove from the arrangement to stop the bulb glowing?

Accepted Answer

both rings 2 & 4

Answer

only ring 2

Answer

both rings 4 & 5

Answer

any one of these rings 2, 4 & 5

Question 10

Which of the following parts is present in a plant cell but absent in an animal cell?

Accepted Answer

cell wall

Answer

centriole

Answer

nucleus

Answer

cytoplasm

Question 11

Shown here is the beam balance. To use balance to weigh items upto 25 Kg in weight, part P should have certain properties.

Which option below CORRECTLY shows the properties that the part P should have?

Accepted Answer

a.Donot Bends easily

b.Donot have high luster

c.Supports 50 Kg weight without breaking

Answer

a. Donot Bends easily

b. Has high luster

c. Donot Supports 50 Kg weight without breaking

Answer

a.Bends easily

b.Donot have high luster

c.Supports 50 Kg weight without breaking

Answer

a.Bends easily

b.Has high luster

c.Supports 50 Kg weight without breaking

Question 12

Question 12.

Accepted Answer

(i - C), (ii - D), (iii - B), (iv - A)

Answer

(i - C), (ii - D), (iii - A), (iv - B)

Answer

(i - D), (ii - A), (iii - B), (iv - C)

Answer

(i - D), (ii - C) (iii - B), (iv - A)

Question 13

Read the following statements with reference to the villi of the small intestine.

(i) They have very thin walls.

(ii) They have a network of thin and small blood vessels close to the surface.

(iii) They have small pores through which food can easily pass.

(iv) They are finger-like projections.

Identify those statements which enable the villi to absorb digested food.

Accepted Answer

(a) (i), (ii) and (iv)

Answer

(b) (ii), (iii) and (iv)

Answer

(c) (iii) and (iv)

Answer

(d) (i) and (iv)

Question 14

We see an object _________________.

(a) when it either emits or reflects light

(b) only when it reflects light

(c) only when it emits light

(d) when it allows light to pass through itself

Accepted Answer

when it either emits or reflects light

Answer

only when it reflects light

Answer

only when it emits light

Answer

when it allows light to pass through itself

Question 15

The 'cubit' is among the first recorded units of length used by ancient people.

One cubit is equal to the length from the elbow to the tip of the longest finger of a person.

If this measure (cubit) was used by some students of a school to measure the length of a 30 metre long corridor, how much would it measure?

Accepted Answer

30 cubits

Answer

15 cubits

Answer

120 cubits

Answer

It will vary from student to student.

Question 16

Larvae (newly hatched insects) were found in a bag of rice.What best explains how the larvae got there?

Accepted Answer

They came from the eggs laid by insects.

Answer

They came from the water in the bag.

Answer

They came from the air in the bag.

Answer

They came from the rice itself.

Question 17

The list below gives the items that Sam decided to have for his dinner.

1. Curry with beans and spinach (palak)

2. Salad with raw fruits and vegetables like carrot and beetroot

3. Curd

4. Sprouted moong dal

From the food items given below, what should Sam add to have a balanced diet for his dinner?

Accepted Answer

Chapatti

Answer

Curry with cauliflower

Answer

Onion pakoda

Answer

Butter milk

Question 18

Which of the following will be the shadows that Trupti will see on the translucent screen, if a sphere is held between two point sources of light and the screen?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 19

Three beakers containing different liquids are placed in a room where the room temperature is about 250C. What would be the correct set of temperatures of the three liquids?

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 20

Water is removed from foods because dried foods can be stored for longer periods without getting spoilt. The graphs given below show the water content originally in four different foods.Water was almost completely removed by passing dry air through each of these four foods. If the weight of each of them after that was 50 grams, which one was the heaviest to start with?

Accepted Answer

Cucumber

Answer

Apple

Answer

Bread

Answer

Butter

Question 21

Springs 1 and 2 as shown in the figure are identical springs. In the positions shown, which spring has more stored energy?

Accepted Answer

Spring 1 has more stored energy.

Answer

Spring 2 has more stored energy.

Answer

Both have the same stored energy.

Answer

It depends on the spring's material.

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