(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Chemistry

Give an example of the following chemical changes.

A reaction where colour change is noticed.

State the main characteristics of chemical reactions. Give at least one example in each case.

Give an example of a photochemical reaction.

Give one example electrochemical reaction.

Complete and balance the following reaction:

NaCl_(aq) + AgNO_3(aq) →

Complete and balance the following reaction:

Pb(NO₃)₂ + KI →

Complete and balance the following reaction:

\[\ce{CuCO3 ->[\Delta]}\]

Complete and balance the following reaction:

\[\ce{Pb(NO3)2 ->[\Delta]}\]

Complete and balance the following reaction:

\[\ce{NH3 + O2 ->[\Delta]}\]

Compare hydrogen with alkali metals on the basis of:

Ion formation

Choose the correct option:

Which metal absorbs hydrogen?

Choose terms from the options given in brackets to complete this sentence.

Metals like …………….. , ……………… and ……………… give H2 with steam.

(iron, magnesium, aluminium, sodium, calcium)

Correct the following statement:

All metals react with acids to give hydrogen.

How is molecular motion related with temperature?

The molecular theory states that the pressure exerted by a gas in a closed vessel results from the gas molecules striking against the walls of the vessel. How will the pressure change if

1. The temperature is doubled keeping the volume constant
2. The volume is made half of its original value keeping the T constant 

State the following:

STP conditions 

Fill in the blanks:

The average kinetic energy of the molecules of a gas is proportional to the ………….

Name the gases which turn moist red litmus blue.

Name affects the acidified K₂Cr₂O₇ paper and also turns lime water dirty milky.

Name: Two carbonates do not produce carbon dioxide on heating.