Question # 1

To become a carbohydrate a compound must contain

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2-carbon

3-carbon

4-carbon

5-carbon

Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:

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Eyes

Ears

Stomach

Nose

Which of the following bonds is not present in NH4CL

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lonic bond

Covalent bond

Co-ordinate covalent bond

De-localized covalent bond

Sex harmones belong to a group of organic compounds called:

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heterocyclics

steroids

amino acids

amines

Which one of the pollutants of automobile exhausts affects the nervous system or produces mental diseases?

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NO₂

SO₂

Hg

Pb

Which of the following is not the application of plasma

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Fluorescent light bulb

Removal of hazardous chemical

Neon signs

Corrosion effective

NaCI has face centered cubic structure. The Na ion at the face of the unit cell is shared by

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2-unit cells

4-units cells

only one unit cell

8-unit cells

When does average rate become equal to instantaneous rate of reaction

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At the start of reaction

time interval is zero

at the end of reactior

time interval approaches zero

The rate of E1 reaction depends upon

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The concentration of substrate

The concentration of substrate as well as nucleophile

The concentration Nucleophilic

Nature of Catalyst

Zine does not show variable oxidation state, because

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Its d-subshell is incomplete

Its d-subshell is complete

It is relatively soft metal

It has two electrons in outermost shell

Which of the following element has high m.p and b.p, it acts as a reducing agent, and can react with bases?

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Sr

Ca

Be

Mg

The rate of E₁reaction depends upon:

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The concentration of substrate

The concentration of nucleophile

The concentration of substrate as well as nucleophile

None of these

The process of osmosis was first discovered by

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Nollet

Pfeffer

Traube

Dutrochet

Coligative properties are the properties of

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Dilute solution which behave as nearly ideal solutions

Concentrated solutions which behave as nearly non-ideal solution

Both (i) and (ii)

Neither (i) and (ii)

Almost forward reaction is complete when value of k_{c :}

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Neither larger nor very small.

Very small.

Very large.

Negligible.

Which of the following is not a property of cathode rays

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They can produce x-rays when they strike a heavy metal anode

They can cause reduction reaction

They produce fluorescence in rare earth and minerals

They comprise neutral particles

Acidic hydrolysis of acetamide gives

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Acetaldehyde

Acetic acid

Methyl amine

Formic acid

Which formula represents the organic compound formed by the reaction of propanoic acid with methanol in the presence of concentrated sulphuric acid as a catalyst

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CH₃CH₂COCH₃

CH₃CH₂CO₂CH₃

CH₃CO₂CH₂CH₃

CH₃CH₂CH₂CO₂CH₃

The amount of heat required to convert one mole of solid directly into its vapour state at STP is called as

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Molar heat of vaporization

Standard heat of vaporization

Heat of reaction

Heat of neutralization

CsF is an ionic compound because:

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High I.P of Cs and high E.A of F.

High I.P of Cs and low E.A of F.

Low I.P of Cs and high E.A of F.

Low I.P of Cs and low E.A of F.

Which of these polymers is a synthetic polymer

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Animal fat

Starch

Cellulose

Polyester

An electric current is passed through silver voltameter connected to a water voltmeter. The cathode of the silver voltameter is 0.108 g more at the end of the electrolysis. The volume of oxygen evolved at STP is

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56 cm³

550 cm³

5.6 cm³

11.2 cm³

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