Chemistry
Number of6.023 × 1020 atoms present in one mole of a gas at STP is

'6.023 × 10–23
6.023 × 1023
'6.023 × 10–20
6.023 × 1020

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Chemistry
What are the components responsible for acid rain?

Oxides of carbon (COx) and Oxides of nitrogen (NOx)
Nitrogen monoxide (NO) and Carbon monoxide (CO)
Sulphur dioxide (SO2) and Nitrogen oxides (NOx)
Carbon dioxide (CO2) and Carbon monoxide (CO)

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