Which of the following is a chemical change?
1 Magnetization of iron
2 Melting of ice
3 Burning of sulphur
4 Melting of wax
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The highest grade of coal whose surface is shining and has the highest calorific value, is 1 Bituminous 2 Lignite 3 Anthracite 4 Peat
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Which of the following is used as a coolant in nuclear reactors? 1 Heavy water 2 Cadmium 3 Liquid sodium 4 None of these
2 Answers WBCS West Bengal Civil Service,
Which of the following is not a compound? 1 Silica 2 Red lead 3 Slaked lime 4 Black lead
What is the wavelength of visible spectrum? 1 1300A-3000A 2 3900A-7600A 3 7800A-8000A 4 8500A-9800A
On what basis Friability limit NMT 1.0%w/w is recommended. what is impact on formulation if this limit exceeds.
Which of the following metals can displace hydrogen from dilute acids? 1 Zinc 2 Gold 3 Copper 4 Silver
My friend has done the DMLT(Diploma in Medical Laboratory Technology)Now she wants to do further education.What should she do? Please Guide which would be best for her
The wavelength of X-ray is of order of 1 1 cm 2 1m 3 1 Angstrom 4 10 micron
Which of the following elements is not-radioactive? 1 Uranium 2 Thorium 3 Plutonium 4 zirconium
what is meant by test manual?
The location and energy of an electron in an atom can be specified by 1 Atomic mass 2 Atomic number 3 Quantum numbers 4 None of these
WHY WE SMELL A SCENT AFTER RAIN?? BUT RAIN WATER IS PUREST FORM OF WATER WHICH IS ODOURLESS.
Biological Sciences 
