Question # 1

Which of the following is basic amino acid

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Lysine

Histidne

Proline

Both a and b

Rancidification of facts and oils is due to:

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oxidation reaction

hydrolysis reaction

both a and b

hydrogenation reaction

Reason for the rancidity of fat is

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Low sponification

High reactivity of fat

Oxidation of fat

All

Major food factors are?

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Fats and oils

Carbohydrates

Proteins

All of these

Water is purified by:

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Filtration

aeration

coagualation

All of these

Which one of the following is a water soluble vitamin?

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niacin

riboflavin

tyrosine

ascorbic acid

Formic acid is given name from Latin word a "formic" which means:

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Red out

Vinegar

Butter

Milk

Albumin is

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Insoluble in water

Heat coagulable protein

A plant protein

A protein of low biological value

Which of these polymers is a synthetic polymer?

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animal fat

starch

cellulose

polyester

Which one of the followings has polar covalent bonds hut is overall nom-polar molecule:

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HF

CO₂

CH₄

N₂

The Complete oxidation of ethanol produces first Ethanal than

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Ethanal

Propanone

Ethanoic acid

Benzoic acid

A solution is a homogeneous mixture of two or more kinds different :

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Molecular.

Covalent substance

Ionic Substances

Both (a) and (c)

When phenol is reduced in the presence of Zn dust, we get

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Cyclohexene

Cyclohexane

Benzene

Benzyne

The velocity of photon is:

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Independent of its wavelength.

Depends on its wavelength.

Equal to square of its amplitude

Depends on its source.

Which of the following pair contains isomers of each other

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Propanoic acid and propanone

Acetone and acetaldehyde

Ethyl alcohol and diethyl ether

Methyl alcohol and dimethyl ether

The element with atomic number 26 will be found in group

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2

8

6

10

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Three times

Six times

Nine times

Two times

The elements of f-block are also known as

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Inner-transition

Outer transition

Normal elements

Alkaline earth metals

A food chemist wants to create the odour of pineapples for a product. An ester with this odour has the formula C₃H₇COOC₂H_5.Which pair of reagents would produce this ester

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C₂H₅CI and C₃H₇COOH

C₂H₅OH and C₃H₇CONH₂

C₂H₅OH and C₃H₇COOH

C₃H₇OH and C₂H₅COCI

Which compound was recognized the parent member of aromatic compounds

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Aniline

Phenol

Benzene

Toluene

A beaker contains 9 grams of water. The number of H-atoms is

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6.02 x 1023

3.01 x 1023

6.02 x 1024

3.01 x 1024

Fungicides are the pesticides which:

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Control the growth of fungus

Kill insects

Kills plants

Kills herbs

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