The critical temperature of a substance is defined as

Question

The critical temperature of a substance is defined as

A. the temperature above which the substance decomposes

B. the temperature above which the substance can exist only as a gas

C. melting point of the substance

D. boiling point of the substanc

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At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

A. $C H_{3} C O O H < C_{2} H_{5} O H < C_{2} H_{5} I$

B. $C_{2} H_{5} I < C H_{3} C O O H < C_{2} H_{5} O H$

C. $C_{2} H_{5} I < C_{2} H_{5} O H < C H_{3} C O O H$

D. $C_{2} H_{5} O H < C_{2} H_{5} I < C H_{3} C O O H$

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What will be the mass of 6.023 x $10^{23}$ molecules of carbon monoxide?

A. 14 gm

B. 28 gm

C. 16 gm

D. 44 gm

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The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

A. 22 gms

B. 66 gms

C. 11 gms

D. 16 gms

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Which of the following methods is used to determine the atomic weight?

A. Victor Meyer's method

B. Dumas' method

C. Cannizaro's method

D. None of these

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Which compound possesses greatest lattice energy?

A. LiF

B. NaF

C. KF

D. CsF

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Arrange the following in order of increasing inter-molecular forces and boiling points: $N H_{3}$ ,He, $C l_{2}$

A. $H e < C l_{2} < N H_{3}$

B. $H e > C l_{2} > N H_{3}$

C. $C l_{2} < H e < N H_{3}$

D. $N H_{3} < H e < C l_{2}$

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Which of the following statement wrong?

A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position

B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion

C. In gaseous states, the molecules are randomly arranged and are apart from each other

D. Solid, liquid and gaseous states have different movement is particles

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Cubic close packed arrangement of ions is described as

A. ABC AB ABC.....

B. ABC ABC......

C. AB AB..........

D. ABC CBA...

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The number of molecules of $C O_{2}$ present in 44 gms. of $C O_{2}$ is

A. 6 x $^{10^{23}}$ approx

B. $10^{30}$ approx

C. 3 x $^{10^{10}}$ approx

D. 12 x $^{10^{23}}$ approx

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The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is

A. 12 litre

B. 11.2 litres

C. 2.24 litres

D. 22.4 litres

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How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?

A. 4

B. 6

C. 8

D. 18

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According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

A. Equal number of electrons

B. Equal number of ions

C. Equal number of atoms

D. Equal number of molecules

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In the gas equation PV = xT, x is a constant. The value of the constant depends upon

A. the quantity of gas

B. the quality of gas

C. type values of T and P

D. None of these

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Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

A. 29 gm/mole

B. 66.7 gm/mole

C. 12.67 gm/mole

D. 25.22 gm/mole

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Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

A. atoms

B. molecules

C. electrons

D. ions

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The number of atoms in 0.004 gm of magnesium is close to

A. 36x $^{10^{5}}$

B. $^{10^{20}}$

C. 5 x $^{10^{20}}$

D. 6.02 x $^{10^{23}}$

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What types of forces are present in molecular solids?

A. electrovalent bonds

B. hydrogen bonds

C. metallic bonds

D. Van der Waal's forces

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The vol. of 20 gms of nitrogen at N.T.P.

A. 16 litres

B. 36 litres

C. 8 litre

D. 32 litres

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How many nearest neighbours are there in an octahedral hole of a close packed structure

A. 4

B. 6

C. 8

D. 12

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In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same?

A. $m (N_{2}) = m (C O)$

B. $m (N_{2}) = 2 m (C O)$

C. $m (N_{2}) = 0.5 m (C O)$

D. None of these

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1.The correct relationship representing the volume occupied by 44 gm of $C O_{2}$ and 64 gm of $S O_{2}$ at constant temperahire and pressure:

A. V( $C O_{2}$ ) > V( $S O_{2}$ )

B. V( $C O_{2}$ ) = V( $S O_{2}$ )

C. V( $S O_{2}$ ) > V( $C O_{2}$ )

D. cannot be predicted

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The radii of $A^{+}$ and $X^{-}$ are 95 pm and 181 pm respectively. Coordination number of $A^{+}$ is expected to be

A. 8

B. 6

C. 4

D. 3

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The number of N2 molecules present in 28 nitrogen is

A. 2 x 10

B. 6 x $^{10^{22}}$

C. 6 x $^{10^{23}}$ approximately

D. 5 x $^{10^{30}}$ approximately

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The number of molecules in 4.25 gm of ammonia are approximately

A. $0.5 \times 10^{23}$

B. $1.5 \times 10^{23}$

C. $2.5 \times 10^{23}$

D. $3.5 \times 10^{23}$

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What will be the mass of 6.03 x $^{10^{23}}$ molecules of carbon monoxide ?

A. 18.00

B. 28.01

C. 56.02

D. 14.05

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The vol. of 20 gm. of hydrogen at N.T.P. is

A. 22.4 litres

B. 112 litres

C. 12 litres

D. 224 litres

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Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

A. 10 gms of calcium

B. 20 gms of carbon

C. 20 gms of calcium

D. 12 gms of carbon

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The ionic radii of $R b^{+}$ and $B r^{-}$ ions are 1.47 $\overset{°}{A}$ and 1.95 $\overset{°}{A}$ , respectively. The most probable type of geometry exhibited by RbBr on the radius ratio rule is

A. NaCl type

B. CsCl type

C. Zinc blende structure

D. Wurtzite structure

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In a unit cell of cesium chloride the arrangement of cesium ions is

A. face centred cubic

B. hexagonal close packed

C. body centred cubic

D. simple cubic

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Kinetic theory of gases postulates :

A. The molecules in a gas are in stationary state

B. The molecules in a gas exert appreciable attraction on each other

C. The molecules move in a random motion with widely different velocities

D. The molecules in a gas collide against each other as well as the wall of the container, but do not change their direction of motion

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Accepted Answer

B. the temperature above which the substance can exist only as a gas

The critical temperature of a substance is defined as

Correct Answer :

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Related Questions

At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

What will be the mass of 6.023 x $10^{23}$ molecules of carbon monoxide?

The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

Which of the following methods is used to determine the atomic weight?

Which compound possesses greatest lattice energy?

Arrange the following in order of increasing inter-molecular forces and boiling points: $N H_{3}$ ,He, $C l_{2}$

Which of the following statement wrong?

Cubic close packed arrangement of ions is described as

The number of molecules of $C O_{2}$ present in 44 gms. of $C O_{2}$ is

The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is

How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?

According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

In the gas equation PV = xT, x is a constant. The value of the constant depends upon

Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

The number of atoms in 0.004 gm of magnesium is close to

What types of forces are present in molecular solids?

The vol. of 20 gms of nitrogen at N.T.P.

How many nearest neighbours are there in an octahedral hole of a close packed structure

In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same?

1.The correct relationship representing the volume occupied by 44 gm of $C O_{2}$ and 64 gm of $S O_{2}$ at constant temperahire and pressure:

The radii of $A^{+}$ and $X^{-}$ are 95 pm and 181 pm respectively. Coordination number of $A^{+}$ is expected to be

The number of N2 molecules present in 28 nitrogen is

The number of molecules in 4.25 gm of ammonia are approximately

What will be the mass of 6.03 x $^{10^{23}}$ molecules of carbon monoxide ?

The vol. of 20 gm. of hydrogen at N.T.P. is

Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

The ionic radii of $R b^{+}$ and $B r^{-}$ ions are 1.47 $\overset{°}{A}$ and 1.95 $\overset{°}{A}$ , respectively. The most probable type of geometry exhibited by RbBr on the radius ratio rule is

In a unit cell of cesium chloride the arrangement of cesium ions is

Kinetic theory of gases postulates :

Also checkout

The critical temperature of a substance is defined as

Correct Answer :

Show all State of Matter MCQ

Related Questions

At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?

What will be the mass of 6.023 x 1023 molecules of carbon monoxide?

The weight of 11.2 litres of CO2 at S.T.P. would be

Which of the following methods is used to determine the atomic weight?

Which compound possesses greatest lattice energy?

Arrange the following in order of increasing inter-molecular forces and boiling points:NH3,He,Cl2

Which of the following statement wrong?

Cubic close packed arrangement of ions is described as

The number of molecules of CO2 present in 44 gms. of CO2 is

The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is

How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?

According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain

In the gas equation PV = xT, x is a constant. The value of the constant depends upon

Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be

Avogadro stated that under similar conditions of temperature and pressure equal volumes of all gases contain equal number of

The number of atoms in 0.004 gm of magnesium is close to

What types of forces are present in molecular solids?

The vol. of 20 gms of nitrogen at N.T.P.

How many nearest neighbours are there in an octahedral hole of a close packed structure

In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same?

1.The correct relationship representing the volume occupied by 44 gm of CO2 and 64 gm of SO2 at constant temperahire and pressure:

The radii of A+ and X- are 95 pm and 181 pm respectively. Coordination number of A+ is expected to be

The number of N2 molecules present in 28 nitrogen is

The number of molecules in 4.25 gm of ammonia are approximately

What will be the mass of 6.03 x 1023 molecules of carbon monoxide ?

The vol. of 20 gm. of hydrogen at N.T.P. is

Which of the following contains the same number of atoms as 12 gms: of Magnesium (Atomic weights : Mg = 24, C = 12, Ca = 40)

The ionic radii of Rb+ and Br- ions are 1.47 A° and 1.95 A°, respectively. The most probable type of geometry exhibited by RbBr on the radius ratio rule is

In a unit cell of cesium chloride the arrangement of cesium ions is

Kinetic theory of gases postulates :

Also checkout

What will be the mass of 6.023 x $10^{23}$ molecules of carbon monoxide?

The weight of 11.2 litres of $C O_{2}$ at S.T.P. would be

Arrange the following in order of increasing inter-molecular forces and boiling points: $N H_{3}$ ,He, $C l_{2}$

The number of molecules of $C O_{2}$ present in 44 gms. of $C O_{2}$ is

1.The correct relationship representing the volume occupied by 44 gm of $C O_{2}$ and 64 gm of $S O_{2}$ at constant temperahire and pressure:

The radii of $A^{+}$ and $X^{-}$ are 95 pm and 181 pm respectively. Coordination number of $A^{+}$ is expected to be

What will be the mass of 6.03 x $^{10^{23}}$ molecules of carbon monoxide ?

The ionic radii of $R b^{+}$ and $B r^{-}$ ions are 1.47 $\overset{°}{A}$ and 1.95 $\overset{°}{A}$ , respectively. The most probable type of geometry exhibited by RbBr on the radius ratio rule is