Question

A Choose the most appropriate answer
1. An arrow pointing downwards in a chemical reaction shows
a evolution of gas.
b. formation of precipitate
c oxidation
d. displacement
2. A chemical reaction in which heat is given out is called
a exothermie reaction
b. endothermic reaction
c. decomposition reaction
d. neutralization reaction
3. In a combination reaction how many products are formed?
at two only
b. one or two only
o one only
d. number cannot be specified
4. What happens in a displacement reaction?
a. A more reactive element replaces a less reactive element
b. A less reactive element replaces a more reactive element
c. An element replaces one which is equally reactive
d. Any element can replace any other element with no relation to reactivity
5. A neutralization reaction is a
a decomposition reaction
b. displacement reaction
c. combination reaction.
d. double displacement reaction
6. An oxidation reaction involves addition of
a. oxygen only
b. hydrogen only
c. oxygen or removal of hydrogen. d. hydrogen or removal of oxygen​

Answer 1

Answer:

1.oxidation

2.exothermic

3.one

4. a

5.double displacement

6.oxygen or remov of hydrogen