Question

1. In combination reactions
A) single product is formed
B) two products are formed
C) more than two products are formed
D) no reaction takes place


2. In rancidity
A) fats and oil are reduced
B) fats and oil are oxidized
C) rusting of iron tekes place
D) neutralisation occur


3.In exothermic reaction
A) Heat may evolved or absobed
B) Heat is evolved
C) no exchange of heat
D) Heat is absorbed


4.When zinc is added to CuSO4 solution
A) combination reaction takes place
B) decomposition reaction takes place
C) displacement reaction takes place
D) precipitation reaction takes place


5. When copper rod is dipped in iron sulphate solution
A) No reaction takes place
B) Copper displaces iron
C) combination reaction takes place
D) decomposition reaction takes place


6. A balanced chemical equation is in accordance with
A) Avogadro's law
B) Law of conservation of mass
C) Law of gaseous volume
D) No specific law


7. The colour of magnesium oxide is
A) black
B) blue
C) white
D) brown


8. Sodium reacts with water forming
A) N2 gas
B) H2 gas
C) Cl2 gas
D) O2 gas


9. When NaCl reacts with silver nitrate solution, white precipitate fomed is of
A) sodium chloride
B) sodium nitrate
C) Silver chloride
D) silver nitrate


10. Iron reacts with
A) cold water
B) hot water
C) steam
D) water at 50 degree Celsius​

Answer 1

Answer:

1) B

2) A

3) B

4) C

5) A

6) D

7) C

8) A

9) B

10) D

hope it's help you!!!