Q-1 which of the following is the lightest metal?
Q-2 The most important of aluminium is?
Q-3 The chemial name of uria is?
q-4 the metal that is present in photo films is?
Q-5 the major ingredient of leather id?
Q-6 which of the following elements is non-radioactive?
Q-7 One fathom is equal to?
Ans- 6 feet
Q-8 what is the unit for measuring the pitch or frequency of sound?
Q-9 cell membrance is ?
Q-10 Polythene is industrially prepared by the polymerisation of?
Q-11 Bromine is?
Ans-A red liquid
Q-12 water has maximum density at?
Ans - 4oC
Q-13 the metal used in storage batteries?
Q-14 which of the following elements is obtained from sea weeds?
Q-15 which of the following is commonly called a polyamide?
Q-16- which thermometer is used to indicate the lowest temperature?
Ans- Alcohol thermometer
Q-17 why do colloidal substance do not deposited of solvent?
Ans- specific gravity is less
Q-18 the contact process is involved in the manufacture of?
Ans- sulphuric acid
Q-19 the gas used to extinguish fire is ?
Ans- carbon dioxide
Q-20 which is good nuclear fuel?