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Chemistry

Chemistry
Sodium bicarbonate is commercially known as

Washing soda
Soda lime
Baking soda
Caustic soda

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Chemistry
Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful

Solar infrared radiation
CO2 in the air
SO2 in the air
Solar ultraviolet radiation

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Chemistry
Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition

UV absorption spectroscopy
Infrared absorption spectroscopy
Rotational spectroscopy
UV photoelectron spectroscopy

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Chemistry
Which one of the following gases has the highest calorific value?

Coal gas
Indane gas
Water gas
Natural gas

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Chemistry
Among the fuels given below, the one with highest calorific value is

Wood
Coke
Natural gas
Coal

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Chemistry
The scientist who experimentally proved the existance of positron is

Bohr
Fermi
Bethe
Anderson

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