CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Introduction to Chemistry

An arrow poin...

Question

An arrow pointing downwards in a chemical reaction shows

(a) evolution of gas
(b) formation of precipitae
(c) oxidation
(d) displacement

Open in App

Solution

(b) formation of precipitate
In a chemical reaction, an arrow pointing downwards shows the formation of a precipitate and an arrow pointing upwards shows the evolution of a gas.

Suggest Corrections

thumbs-up

3

Similar questions

Q. An arrow pointing downwards in a chemical reaction shows

(a) evolution of gas
(b) formation of precipitae
(c) oxidation
(d) displacement

Q. Give one example each of a chemical reaction showing the following characteristics.

(a) evolution of a gas
(b) change of colour
(c) formation of precipitate
(d) change of state from liquid to gas
(e) change of state from gas to liquid

Q. (a) What is meant by chemical reaction? Explain with the help of an example.
(b) Give one example each of a chemical reaction characterised by:
(i) evolution of a gas
(ii) change in colour
(iii) formation of a precipitate
(iv) change in temperature
(v) change in state.

The chemical reaction between quicklime and water is characterised by :
(a) evolution of hydrogen gas

(b) formation of slaked lime precipitate

(c) change in temperature of mixture

(d) change in colour of the product

Q. Give one example each of a chemical reaction characterised by:
(a) evolution of a gas
(b) formation of a precipitate
(c) change in temperature
Write equations of the reactions which take place in each case.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Introduction to Chemistry

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Introduction to Chemistry

Standard VII Chemistry

Join BYJU'S Learning Program

CrossIcon