Question

EXERCISES
(d) evaporation
(c) condensation
(d) Water
(d) condensation
I. Choose the correct answer.
1. The process of converting a substance from solid to liquid is called
(melting
(bx freezing
2. Which of the following is an example of solid state of matter?
(& Chair
167 Milk
(c) Oxygen
3. The decrease in size of matter on cooling is called
(a) contraction
(b) expansion
(c) evaporation
4. Which of the following is a chemical change?
(dTearing
(b) Melting
(c) Ageing
5. On cooling a substance, the speed of its particles
(a) decreases
(b) increases
(c) remains same
(d) Freezing
(d) becomes zero
Fill in the blanks.
1. There is a
force of attraction between the particles of gases.​

Answer 1

252, 16

The alteranate follows a sequence

2,4, 7,11

2+2=4

4+3=7

7+4=11

The next number is 11+5=16

15,47,118

These numbers are obtained by subtracting 1,2,3 respectively from their respective successors

4^2=16-1=15

7^2=49-2=47

11^2=121-3=118

The next number is

16^2=256-4=252

Answer 2

Answer:

1. melting
2. chair
3. contraction
4. ageing
5. decreases
6. cohesive force

Explanation:

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