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Question 1
__________ is the process, by which, water vapour in the air is changed into liquid water.
Question 2
_______ gas gives an orange glow when electricity is passed through it. It is generally used in fluorescent lighting.
Question 3
After going through the processes of scouring and bleaching, 99% of cotton is made up of which polymer?
Question 4
Oxygen molecule is ______.
Question 5
Which of the following is false with reference to a photo-voltaic cell ?
Question 6
Addition of which substance gives blue colour to glass?
Question 7
What is the fundamental unit of amount of a substance?
Question 8
Which gas is used in filling electric bulbs____.
Question 9
Atomic number of which element is greater than that of chlorine?
Question 10
Heating of a ore below its melting point in the absence of air is known as
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Mar 28BPSC
