Question

Fill in the blanks

(a) Materials that do not allow light to pass through them are called ____.

(b) Metals have a shiny appearance called _____.

(c) Materials which can be pressed easily are called _____ materials.

(d) Copper and gold are _______.

(e) Dried leaves fallen on the surface of a pond _____ in the pond.

(f) ______ and ________ dissolves in water.

2. Fill in the Blank

a. Generally on heating metals ______ .

b. Paper, petrol, LPG, CNG etc. are _________ substances.

c. A change in which new substance is formed is called __________.

d. A change that occurs during a definite time interval is known as _________.

e. ______ is the process Heating of milk for boiling to kill microbes.

f. Dissolving sugar in water is a ____________.

g. water changes into ice on cooling is an example of _______.

h. Those changes which are desired to occur that is we want them to take place are known

_________.

3. Why metals often lose their shine and appear dull?

4. Select odd one out?

(a) Aluminium

(b) Iron

(c) Silver

(d) Sand

5. Find the odd one out from the following

(a) Tawa

(b) Spade

(c) Pressure cooker

(d) Eraser

6. Pick one material from the following which is completely soluble in water.

(a) Chalk powder

(b) Tea leaves​

Answer 1

Answer:

Q-1

1 opaque object

6 salt and water

Q-4 sand

Q-5 eraser

Q-6 Tea leaves

Answer 2

Answer:

1 .opaque objects

2. luster

3. soft

4. metal

5. float

6.salt and sugar

Q4. sand

Q5. eraser

Q6.tea leaves