EASY

Earn 100

Some properties of system are given below out of which x are number of extensive property and y are the number of intensive property. find $(x - y)$ .
Boiling point, surface tension, heat capacity, gibbs free energy, vapour pressure, refractive index, density, temperature, entropy, enthalpy, mass, length, volume, area, internal energy.

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Important Questions on Some Basic Concepts of Chemistry

MEDIUM

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

A particle

(m = 1 k g)

slides down a frictionless track

(A O C)

starting from rest at a point

A

(height

2 m

). After reaching

C,

the particle continues to move freely in air as a projectile. When it reaches its highest point

P

(height

1 m

), the kinetic energy of the particle (in

J

) is: (Figure drawn is schematic and not to scale; take

g = 10 m s^{- 2}

) ______________.
Question Image

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

A proton and an antiproton come close to each other in vacuum such that the distance between them is

10 cm .

Consider the potential energy to be zero at infinity. The velocity at this distance will be:

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

3 kg

body is dropped from the top of a tower of height

135 m

. If

g = 10 m s^{- 2}

, then the kinetic energy of the body after

3 s

will be

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

The solid like conducting state of gases with free electrons is called

MEDIUM

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

When a proton, anti-proton annihilate, the energy released is

MEDIUM

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

The average mass of rain drops is

3.0 \times 1 0^{- 5} kg

and their average terminal velocity is 9 m/s. Calculate the energy transferred by rain to each square metre of the surface at a place which receives 100 cm of rain in a year.

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

C O_{2}

is isostructural with

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

When a man increases his speed by

2 m s^{- 1}

, he finds that his kinetic energy is doubled, the original speed of the man is

MEDIUM

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

How will you prepare (i) a mixture and (ii) a compound, using iron filings and sulphur. Can you just by seeing, judge that the mixture formed is a homogeneous and heterogeneous mixture?

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

Which of the following is incorrect statement for liquid?

EASY

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

Which one of the following is the wrong statement about the liquid?

HARD

Chemistry>Physical Chemistry>Some Basic Concepts of Chemistry>Matter and its Nature

A block of ice at