Question # 1

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

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environment

hydrosphere

pollutant

biosphere

All of the following are essential amino acids except

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Lysine

Aspartate

Tryptophan

Hisitidine

Hydrogen bonding is extensively present in proteins which form the spiral. The hydrogen bond being produced is between

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nitrogen and hydrogen atom

oxygen and hydrogen atom

carbon and hydrogen atom

oxygen and carbon atom

Mathematically, Boyle's law is indicated as:

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VT = K

PT = K

PV = K

None of these

The eleventh concentration of metal cause clogs of gills in fish:

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Al

He

Pb

Ca

Glycogen is stored in

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Animals

Plants

Soil

None of these

The other name for cross linked polymers is

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Linear polymer

Branched polymers

Inter connected polymers

None of these

The polymers which can not be re-softened again and again are called

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Thermoplastic

Thermosetting

Both a and b

None

The alternate name of Glucose is

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Dextrose

Grape sugar

Blood sugar

All

Water cover earth surface more than:

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50%

60%

70%

80%

The volume of given mass of gas is directly proportional to absolute temperature when pressure is kept constant this is called

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Boyle's law

Charles's law

Graham's law

Dalton's law

Reactivity of alkyl halides with magnisium is of the order:

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Rl > RBr> RCl > RF

RBr > RCl >RF > Rl

RCL > RF > Rl > RBr

RF >RI >RBr > RII

The electronic configuration of an atom/ion can be defined by the following

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Aufbau principle

Pauli's exclusion principle

Hund's Rule

All the above

Steel may be manufacture by two processes which two are correct

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Open hearth process and besemer process

Open hearth process and Haber process

Bassemer process and Haber process

Contact process and Haber process

Law of mass action states that rate of chemical reaction is directly proportional to the product of active masses of the reactants. The term active mass means

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Mass in grams converted to products

Number of moles

Number of moles per dm³of reactants

Total pressures of the reactants

The apex angle of the folded filter paper is slightly greater is termed as:

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60 degree

30 degree

45 degree

90 degree

The movement of solvent molecules through a semipermeable membrane is called

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Electrolysis

Electrophoresis

Osmosis

Cataphoresis

The Mn³⁺has ______ color

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Violet

Green

Red/brown

No color

Ozone depletion in stratosphere shall result in

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Forest fires

Increased incidence of skin cancer

Global warming

None of the above

The nitrogen present in some fertilizers helps plants

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To fight against disease

To produce fat

To undergo photosynthesis

To produce protein

The functional group of acid amide is

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3-d series elements are present in:

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First period

Second Period

Third period

4th period

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