A weather ballon filled with hydrogen at 1 atm and 27Â° C has volume equal to 12000 litres. On ascending it reaches a place wher..
Assertion : We air is heavier than dry air.
Reason : The density of a dry air is more than density of water.
Assertion : 4.58mm and 0.0098Â°C is known to be triple point of water.
Reason : At this pressure and temperature all the three s..
Pressure remaining the same, the volume of a given mass of an ideal gas increases for every degree centigrade rise in temperature ..
At constant temperature,in a given mass of an ideal gas
Assertion : All molecules in a gas have same speed.
Reason : Gas contains of different size and shape
Correct gas equation is
If P, V, M, T, and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the dens..
Quartz is are crystalline variety of
The substance which does not show sharp melting point is
Among solids the highest melting point is established by
A crystalline solid
Which of the following statements is wrong for gases
Kinetic energy of molecules is highest in
If the pressure and absolute temperature of 2 litres of CO2 are doubled, the volume of CO2 would become
The ability of a given substance to assume two or more crystalline structure is called
Which one of the following Statements is not correct about the three states of matter i.e. solid, liquid and gaseous
The temperature and pressure at which ice, liquid water and water vapour can exist together are
Which of the following is true about gaseous state
A volume of 1 m3 is equal to
Which of the following relations for expressing volume of a sample is not correct
A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely dis..
Which of the following is ferroelectric compound
The lustre of a metal is due to
To get a n-type semiconductor, the impurity to be added to silicon should have which of the following number of valence electrons ..
Which of the following exhibits the weakest intermolecular forces
One atmosphere is numerically equal to approximately
With which one of the following elements silicon should be doped so as to give p-type of semiconductor
Molecules/ions and their magnetic properties are given below
Diamond is an example of
Which one of the following metal oxides is antiferromagnetic in nature
A crystalline solid have
The number of carbon atoms per unit cell of diamond is
The solid NaCL is a bad conductor of electricity since
Which type of solid crystals will conduct heat and electricity
Crystalline solids are
Which of the following is true for diamond
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