What is one light minute?
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Science is both a process and product-Substantiate
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how to take 2 pages print in to one page?
Gypsum is added to cement clinker to 1 Increase the tensile strength of cement 2 Bind the particles of calcium silicate 3 Decrease the rate of setting of cement 4 Facilitate the formation of colloidal gel
Which scientist made detailed study on novae?
In modern science, what is 'fourth dimension'?
Ozone attacks 1 Mercury and silver 2 Copper 3 Silver and iron 4 None of these
Rayon is chemically 1 Glucose 2 Amylase 3 Cellulose 4 Pectin
When was the first rocket launched from thumba?
Why is it necessary to cook food ?
Which of the following gases is used as an illuminant in lamps used by hawkers? 1 Methane 2 Ethylene 3 Acetylene 4 Hydgrogen
The combustible material at the tip of a safety match sitck is 1 Sulphur 2 Manganese dioxide 3 Phosphorus 4 Antimony sulphide
How long can arihant stay underwater?