Question # 1

Major food factors are?

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Fats and oils

Carbohydrates

Proteins

All of these

Condensation occurs between amino acids with the elimination of

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H₂O

H₂

O₂

NH₃

H₂O is liquid at room temperature whereas H₂S is a gas because

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H₂O used as drinking water, but H₂S has rotten egg smell

H₂O is neutral. H₂S is a weak acid

stronger hydrogen bonding in H₂O than in H₂S

H₂O occurs abundantly than H₂S

An ideal gas expands according to PV=constant. On expansion, the temperature of gas

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will rise

will drop

cannot be determined because the exteral pressure is not known

will remain same

Per hydro cyclopentano phenathrene is the basic structure of all the:

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Proteins

vitamins

waxes

amines

The enzymes that bring about exchange of functional groups like phosphate are called

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Ligases

Lyases

Isomerases

Transferases

Enzymes are catalysts which contain other than carbon and hydrogen one other element

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oxygen

sulphur

phosphorus

iodine

Example of non-protein amino acid

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Alanine

Citrulline

Phenylalanine

Leucine

Daily protein intake for normal adults should be:

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0.2g/kg

0.5g/kg

0.8g/kg

1.1g/kg

If the energy of the activated complex lies close to energy of reactants, it means that reaction is

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Slow

Exothermic

Endothermic

Exothermic and fast

Nitrogen in the atmosphere is:

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78%

21%

0.9%

0.03%

The range of UV-B is:

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320 to 400 nm

200 to 280 nm

280 to 320 nm

50 to 400 nm

A fibre which is made from acrylonitrile as monomer

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PVC

Rayon fibre

Acrylic fibre

Polyester fibre

Rectified spirit contains alcohol about:

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80%

85%

90%

95%

The open chain organic compounds are called

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Linear compounds

Aromatic

Aliphatic

Both A and B

Orlon is a polymer of

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Tetrafluoroethylene

Acrylonitrile

Ethanoic acid

Benzene

In the presence of high temperature and pressure peat is converted to:

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Lignite

Polymorphism

Polymerization

Catenation

If heat absorbed in the reaction, the process is said to be

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Exothermic

Isothermal

Adiabatic

Endothermic

In the extraction of iron, slag is produced which is

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CO

FeSiO₃

MgSiO₃

CaSiO₃

A solution sucrose is 34.2%. The volume of solution containing one mole of solute :

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342cm³

1000cm³

500cm³

242cm³

Which of the following is not charged particle

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Proton

Electron

Neutron

Hydrogen nucleus

the unreactivity of alkanes is based upon

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Inertness of sigma bond

Non-polarity of the bonds

Both A and B

None of above

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