Related Questions
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4
In the wurtzite structure sulphur atoms have
B. hexagonal dose packed arrangement
C. body centred arrangement
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4
In a face centred cubic arrangement of ions, the coordination number of ions is
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4
Boltzmann constant is given by
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4
In anti-fluorite structure the negative ions
A. occupy tetrahedral voids
B. occupy octahedral voids
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4
The vapour density of completely dissociated sociated would be
A. Determined by the amount of solid used in the experiment
B. Triple to that of
D. Slightly less than half of that of
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4
In a close packed arrangement of N spheres, the number of octahedral holes are
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4
The number of atoms per unit cell in simple cubic, face centred cubic and body centred cubic arrangement are, respectively
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4
An open vessel at 37°C is heated until 3/5 of the air in it has been expelled. Assuming that the volume of the vessel remains constant the temperature to which the vessel is heated is
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Which of the following should be most viscous?
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The wt. of 2.8 litres of a gas at N.T.P. is 3.50 gms. Its V.D. is
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If the tetrahedral sites in ccp arrangement of negative ions (Y) were half filled with cation (X), the empirical formula of the compound would be
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5.At a given temperature and pressure 2 volumes of A combine with 5 volumes of B to form 2 volmes of C and 1 volume. A combine with one volume of B to form 2 volumes of D. The formula of C is
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4
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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Kinetic gas equation is, PV =...
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Normal boiling points values are for , - 34C, bromine 58°C, carbon tetrachloride 77°C and oxygen - 183°C. Which of these liquids has the highest vapour pressure at room temperature?
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Which of the following methods is used to determine the atomic weight?
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A gas or vapour may be liquefied only at a temperature at or
A. below the critical temperature
B. above the critical temperature
C. above the normal boiling point
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4
Three dimensional array of points in space is called
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4
Volume occupied by 4.4 gift of carbon dioxide is
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The weight of 11.2 litres of at S.T.P. would be
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4
If the temperature and pressure remain unchanged the volume of obtained by the decomposition of a certain volume of will be
A. Triple the volume of
B. Half the volume of
C. Equal to the volume of
D. One third the volume of
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The number of molecules in 32 gms of oxygen in
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The Van der Waal's equation explains the behaviour of
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The vapour density of a gas is 11.2. The volume occupied by 2.4 g of the gas at S.T.P wil be
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4
In what ratio by mass carbon monoxide and nitrogen should be mixed so that partial pressure exerted by each gas is same?
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4
Match box has the symmetry of which of the following systems?
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4
Chloroform and benzene form a pair of miscible liquids. These can be separated by
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4
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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Indicate the most viscous liquid of the following
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Volume occupied by 1 gm equivalent of oxygen at NTP is