In a closed flask of 5 litres, 1.0 g of H2 is headed from 300 to 600 K. Which statement is not correct
A particular solid is very hard and has a high melting point. In solid state it is a non conductor and its melt is a conductor of ..
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..
Which one of the following is good conductor of electricity
The root mean square speeds at STP for the gases H2 , N2 ,O2 and HBr are in the order
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..
Assertion : All molecules in a gas have same speed.
Reason : Gas contains of different size and shape
Assertion : We air is heavier than dry air.
Reason : The density of a dry air is more than density of water.
Molecules/ions and their magnetic properties are given below
Which one of the following Statements is not correct about the three states of matter i.e. solid, liquid and gaseous
Davy and Faraday proved that
A pure crystalline substance, on being heated gradually, first forms a turbid looking liquid and then the turbidity completely dis..
At constant temperature,in a given mass of an ideal gas
Dulong and Petits law is valid only for
A crystalline solid have
Pressure remaining the same, the volume of a given mass of an ideal gas increases for every degree centigrade rise in temperature ..
If the pressure and absolute temperature of 2 litres of CO2 are doubled, the volume of CO2 would become
Which one of the following metal oxides is antiferromagnetic in nature
A crystalline solid
Quartz is are crystalline variety of
Which of the following relations for expressing volume of a sample is not correct
The substance which does not show sharp melting point is
The temperature and pressure at which ice, liquid water and water vapour can exist together are
Pressure of a gas in a vessel can be measured by
The number of carbon atoms per unit cell of diamond is
Which of the following is ferroelectric compound
The ability of a given substance to assume two or more crystalline structure is called
Crystalline solids are
A volume of 1 m3 is equal to
Correct gas equation is
which one of the following statements is not true about the
To get a n-type semiconductor, the impurity to be added to silicon should have which of the following number of valence electrons ..
Among solids the highest melting point is established by
Which of the following statements is wrong for gases
Kinetic energy of molecules is highest in
With which one of the following elements silicon should be doped so as to give p-type of semiconductor
The lustre of a metal is due to
Which of the following is true about gaseous state
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