Question

4. Acids turns blue litmus to
a. Red
b. No change
C. Green
d. Yellow
5. The reaction of metals with acids takes place with the evolution of
a. Hydrogen
b. Oxygen
c. Carbondixoide
d. Nitrogendixoide
6. Conversion of sugarcane juice into sugar crystal is a
a. Physical change
b. Chemical Change
c. A reversible change
d. None of these
7. Copper wires are used to make electric wires because
a. It is cheap
b. It is good conductor of electricity
C. It is bad conductor of electricity
d. It reduces electricity bill
8. If S denotes speed, D-distance, T-time then S will be equal to​

Answer 1

Question no. 1 ka answer a red hai

Answer 2

Answer:

4 = ʀᴇᴅ

5 = hydrogen

6 = ᴄʜᴇᴍɪᴄᴀʟ ᴄʜᴀɴɢᴇ

7 = ᴄᴏᴩᴩer has low resistivity, and therefore is an excellent conductor.