Question

5.
[5]
5
a
Choose the correct option.
Which of the following process is shown by iodine and naphthalene ?
(i) Melting (ii) Sublimation (iii) Liquefaction (iv) Vapourisation
b.
Which of the following is the fourth state of matter?
(i) Solid (ii) Gas (iii) Plasma liv. Liquid
C.
What is the boiling point of pure water ?
(i) 78°C (ii) 50°C (iii) 100°C (iv) 0°C
d.
A mixture of sand and water is separated by
(i) Filtration (ii) Aeration (iii) Evaporation (iv) Boiling
e.
The chemical used as a coagulating agent is
(i) dry ice (ii) tea leaves (iii) alum (iv) charcoal​

Answer 1

QUESTION :- CHOOSE THE CORRECT OPTION :-

Q- Which of the following process is shown by iodine and naphthalene ?

(i) Melting (ii) Sublimation (iii) Liquefaction (iv) Vapourisation

ANSWER :- (ii) Sublimation

Q-Which of the following is the fourth state of matter?

(i) Solid (ii) Gas (iii) Plasma liv. Liquid

ANSWER:- (iii) Plasma

Q- What is the boiling point of pure water ?

(i) 78°C (ii) 50°C (iii) 100°C (iv) 0°C

ANSWER:- (iii) 100°C

Q- A mixture of sand and water is separated by

(i) Filtration (ii) Aeration (iii) Evaporation (iv) Boiling

ANSWER:- (i) Filtration

Q- The chemical used as a coagulating agent is

(i) dry ice (ii) tea leaves (iii) alum (iv) charcoal

ANSWER:- I DON'T KNOW

HOPE IT HELPS

MARK BRAINLIEST PLS