Heena Sharma, Shubhankat Vats and, Rashmi Gupta Solutions for Chapter: Periodic Tests, Exercise 15: SAMPLE QUESTION PAPER

Define specific latent heat of vaporization.

A car of initial speed $60 \mathrm{m}/\mathrm{s}$ is moving with uniform acceleration of $4 \mathrm{m}/{\mathrm{s}}^2$. Distance travelled by car in $4th$ second is calculated as distance travelled by car in $4$ seconds

$s_1=ut+\frac{1}{2}a{t}^2=60\times 4+\frac{1}{2}\times 4\times 4^2=272 \mathrm{m}$

Distance travelled by car in $3$ seconds

$s_2=ut+\frac{1}{2}a{t}^2=60\times 3+\frac{1}{2}\times 4\times 3^2=198 \mathrm{m}$

Hence, distance travelled by the car in $4\mathrm{th}$ second

$s_1=s_1-s_2=272-198=74 \mathrm{m}$

Find the distance is travelled by the car in $4\mathrm{th}$ second by an alternate method.

Explain the method of separation of a mixture of two miscible liquids using one example.

Explain true solution, suspension and colloid on the basis of following characteristic:

Type of mixture

Explain true solution, suspension and colloid on the basis of the following characteristic:

Stability

Explain true solution, suspension and colloid on the basis of the following characteristic:

Filterability

Explain true solution, suspension and colloid on the basis of characteristic "size of solute".

Explain true solution, suspension and colloid on the basis of following characteristics:

Visibility of particles.