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Which of the following is an example of amorphous allotropes of carbon?

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Important Questions on Chemistry

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Which among the following is a non-biodegradable waste?
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If steam is passed over red hot coke
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Which of the following is used to remove the green colour from glass?
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Olfactory indicators show change in:
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The process of separation of pure water from impurities by selective boiling is called_____.
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Which of the following gases turn water milky?
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Which of the following is also known as Epsom salt?
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Which fibre among the following is used to make rayon clothing?
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The process of separation of pure water from impurities is called?
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The equation that represents the water-gas shift reaction is :

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Given below are two statements :
Statement I : The process of producing syn-gas is called gasification of coal.
Statement II : The composition of syn-gas is CO+CO2+H2(1:1:1).
In the light of the above statements, choose the most appropriate answer from the options given below :
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The process of converting sugar into alcohol is called _____:

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(i) The gas which is common in both 'water gas' and 'producer gas' is ________
(ii) Producer gas consists of a mixture of ________ and _______ gases in the ratio 2 : 1.
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______ is one of the most important technique for the separation of a mixture by passing it in solution or suspension through a medium in which the components move at different rates.
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Which of the following variety of coal contains the highest percentage of carbon? 
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Which of the following elements’ salts are most soluble?
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_____ is the process of allowing particles in suspension in water to settle out of the suspension under the effect of gravity.
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Which of the following reactions is an example of use of water gas in the synthesis of other compounds?
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Baking powder is a mixture of_____and_____?
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The synonym for water gas when used in the production of methanol is: