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Chemistry

Chemistry
Which among the following is found in chlorophyll ?

Ca2+
Mg2+
A l3+
Fe2+

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Chemistry
The inexpensive and commonly used variety of glass is called soda glass.

was initially used for storing sodium carbonate
is made using soda lime
was used initially for making bottles of soda(carbonated drink)
is made using soda(sodium carbonate)

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Chemistry
Two electrons in an orbital are differentiated by which of the following ?

Spin quantum number
Azimuthal quantum number
Principal quantum number
Magnetic quantum number

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Chemistry
The gas used to extinguish fire is

Neon
Carbon dioxide
Nitrogen
Carbon monoxide

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Chemistry
The major use of sulphur is in the manufacture of

SO2
Fungicide
H2S
H2SO4

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Chemistry
The gas produced in marshy places due to decomposition of vegetation is

Methane
Carbon monoxide
Carbon dioxide
Sulphur dioxide

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