Question # 1

The branch of chemistry interlinked with biology, physics, medicines, agriculture, public health and sanitary engineering etc. is:

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Biochemistry

Physical chemistry

Pharmaceutical chemistry

Environmental chemistry

Reactivity of carbonyl compounds is due to

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Electrophilic carbon

Less stearic hindrance

Unsaturation of Co

Polarity of bond

Sugar crystals belong to the system

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cubic

monoclinic

triclinic

orthorhombic

How much quantity of water is in the domestic use

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0.08%

16%

24%

90%

The value of oxidation number of chlorine in HCIOs is

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+7

+5

-1

+3

2,4,6-Trinitrophenol is commonly called as

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Phthalic acid

Tartaric acid

Malonic acid

Picric acid

The main source of natural fibre is

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animal fibres

vegetables fibres

mineral fibres

all of the above

Electrons in 5d energy level are filled up in case of

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Lanthanides

Transition metals

Actinides

Rare gases

Which equation among the following is applicable to an ideal gas equation?

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P = nRT

P = MRT

P = dPRT/M

V = dRT/M

When a nitrogeneous base combine with a sugar it is called

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Ribose

Nucleotides

Nucleoside

None

A solid has a sharp melting point slightly above room temperature and is a poor thermal and electrical conductor, its crystal classification by bond type is

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Ionic

Metallic

Molecular

Covalent

On heating acetaldehyde with ammonical silver nitrate solution, we get

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CH₃OH

Silver acetate

HCHO

Silver mirror

The element which has a simple cubic lattice in solid state is

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Se

Te

Po

None of these

During electrolysis of KNO₃, H₂is evolved

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Anode

Cathode

Both a and b

None

Complete combustion of alkane yields

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CO₂+ H₂O

CO₂+ heat

CO + H₂O heat

CO₂+ H₂O + heat

The e.m value for positive rays maximum for:

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Oxygen.

Nitrogen.

Helium.

Hydrogen.

Butyric acid was named from butyrum means:

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Red out

Vinegar

Butter

Milk

Colligative properties are the properties of :

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Dilute solutions which behave as nearly ideal solutions.

Concentrated solutions which behave as nearly non-ideal solutions.

Both(i) and (ii)

Neither (i) nor (ii)

Which is the formula of tetra-ammine chloronitro platinum (VI) sulphate?

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[Pt(NH₃)₄(NO₂)]SO₄

[PtNO₂Cl(NH₃)₄]SO₄

[PtCl(NO₂)(NH₃)₄]SO₄

[Pt(NH₃)₄(NO₂)Cl]SO₄

The substances that are added to the soil to provide nutrient or assential elements required for plant growth, are called

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Additives

Fertilizer

Manures

Posticides

In a group form top to bottom, the hardness of alkali metals

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Remains unchanged

Increases

Decreases

None

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

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