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Chemistry

Chemistry
Brass is a

Heterogeneous mixture
Element
Compound
Homogeneous mixture

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Chemistry
Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?

Neon
Nitrogen
Sodium
Hydrogen

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Chemistry
The charcoal used to decolourise brown sugar solution is

Wood charcoal
Coconut charcoal
Animal charcoal
Sugar charcoal

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Chemistry
Which one of the following has a maximum tendency to form M3 ion ?

As
P
N
Bi

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Chemistry
'Atomic theory' of matter was given by

Avogadro
Dalton
Newton
Pascal

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Chemistry
The tip of the match-stick contains

Phosphorus trichloride
Red phosphorus
Phosphorus pentoxide
White phosphorus

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