Question # 1

Washing clothes at 140 ^oF uses almost the energy as at 140 ^oF wash

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Half

Thrice

Twice

None of the above

--------------- acts a catalyst promoting the breakdown of ozone.

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I2

Br2

Cl2

None

During the glycolysis net ATP produced are.

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2

4

6

8

The word energy is used in physics ofr the firt time.

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1902

1858

1805

1802

The enthalpy of reaction H2+I2--- 2HI

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-571.6 k J

+53.8 kJ

11 kJ

-393.5 kJ

Bond formation energy of one O-H bond is............

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488 kJ/mol

484 kJ/mol

486 kJ/mol

489 kJ/mol

Formation of NO is

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Exothrmic

Endothermic

No Heat Change

None of these

--------------- of the energy used by traditional electric bulb is wasted in producing heat.

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60%

50%

70%

90%

The part of the universe that we want to focus our attention called.

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Surrounding

Energy

System

Both a and b

All chemical reaction involves.

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Enzymes

Catalyst

Energy changes

All of these

Which is released in anacrobic respiration.

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Stearic acid

Citric acid

Lactic acid

Amino Acid

Activation energy of a chemical reaction must be....... the everage kinetic energy of reacting molecules.

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Equal to

Grether than

Lower than

None of these

Bond dissocialation for H2 is

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435 kJ/mol

440 kJ/mol

430 kJ/mol

445 kJ/mol

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