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Question 1/30
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A deuterium nucleus consists of which particles?
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Question 2/30
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What is the chemical formula for water glass?
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Question 3/30
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Which metal is not attacked by the environment?
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Question 4/30
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Of the floating iceberg in the sea, how much is the portion remaining above the sea level?
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Question 5/30
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Rainwater collected after 30 to 40 minutes of raining is not suitable for drinking why?
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Question 6/30
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Which place has no Ashokan edicts?
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Question 7/30
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In vulcanisation, with which the natural rubber is heated?
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Question 8/30
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The Base used as an antacid is –
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Question 9/30
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Rusting of iron is an example of which thing?
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Question 10/30
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The inert gas used as beacon Light is –
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Question 11/30
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Which is the basis of modern periodic table?
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Question 12/30
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Which charcoal is used to deeolourise raw sugar?
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Question 13/30
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If the dew point is below freezing, it is referred to which point?
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Question 14/30
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From where can renewable energy be obtained?
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Question 15/30
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The phenomenon of ejection of electrons from the metal surface when a light of suitable frequency falls on it is called–
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Question 16/30
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Detergent cleans the surface on the principle of –
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Question 17/30
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In the leaf of tobacco what is found?
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Question 18/30
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Which particle has similar mass to that of the electron?
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Question 19/30
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Which element does not show variable oxidation states?
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Question 20/30
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Cement is a mixture of –
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Question 21/30
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Orientation of atomic orbital is controlled by –
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Question 22/30
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A lighted candle gets extinguished when covered with a tumbler. Why?
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Question 23/30
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What do the contact of two air masses differing sharply in humidity originate?
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Question 24/30
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Radioactivity is the fission of –
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Question 25/30
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If the bullets could not be removed from gunshot injury of a man, it may cause poisoning by–
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Question 26/30
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Vinegar formed by the fermentation of cane sugar contains–
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Question 27/30
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Carbon dioxide is a –
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Question 28/30
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Which of the following elements behave chemically both as metal and a non- metal?
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Question 29/30
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Acid rain destroy vegetation because it contains –
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Question 30/30
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What is produced during the formation of photochemical smog?