The recent atomic weight scale is based on
1 1H1
2 1H2
3 6C12
4 8O16
Bleaching powder is made from 1 Sulphur dioxide and gypsum 2 Chlorine and charcoal 3 Soda ash and lilme 4 Lime and chlorine
Which are the research centres of department of atomic energy?
Who propounded the signs of the zodiac?
What is blood ? Describe its functions in the human body ?
Why we use nhexane inplace of hexane in mobilepase preparation
What are reflecting nebulae?
what is office automation?
Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent
Brass is an alloy of 1 Nickel and copper 2 Zinc and copper 3 Nickel and zinc 4 Nickel and silver
What is one light year?
How long can arihant stay underwater?
Which of the following is used as a lubricant? 1 Graphite 2 Silica 3 Diamond 4 Iron oxide