Question # 1

Which of the following is the element not present in all proteins?

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Carbon

Hydrogen

Nitrogen

Sulphur

Soap is formed when triglyceride reacts with

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Caustic soda

Soda lime

Lime

Caustic potash

Slight oxidation of primary alcohol eives

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Ketone

Aldehyde

-Organic acid

An ester

The solubility product is only applicable for those substance whose molar concentrations is

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0.01

Equal to 1

Less than 0.01

Greater than 10

Why is CO called as pollutant? reason is:

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It combines with oxygen

It inactivates glycoblysis

It combines with hemoglobin

Inactivates nerves

Equal volumes of ideal gases contain equal number of molecules at:

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Same temperature

Same pressure

Same environmental conditions

Both (A) and (B)

Chromium (VI) is highly toxic and can cause

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Blindness

Cancer

Liver problems

Blood problems

Alkyl halides are considered to be very reactive compounds towards nucleophiles, because

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The have an electrophilic carbon

They have an electrophilic carbon and a bad leaving group

They have an electrophilic carbon and a good laving group

They have a nucleophilic carbon and a good leaving group

The substance used in the soil to provide element.Which are essential for plant growth are known as:

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manures

fertilizers

pesticides

additive

COD of water can be measured by

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Cr₂O₃

Cr₂O₄^-2ions

Cr₂O₇^-2ions

None of these

The origin ofacidic nature of alkyne is?

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small size of C

Small size of H

polarity of triple bond

sp hybridization

Which one of the followings is a heterocyclic compound

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Cyclohexanol

Phenol

Pyridine

Anthracene

The shape of CIO^-₃according to valence shell electron pair repulsion theory will be

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Planar triangle

Pyramidal

Tetrahedral

Square planar

Which of the following is not a fatty acid

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Propanoic acid

Acetic acid

Phthalic acid

Butanoic acid

Extent to H₂ + L₂à2Hl can be increased by :

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Increasing temperature.

Increasing product.

Increasing pressure.

Adding a catalyst.

A solution containing 5.8 grams acetone (CH₃OCH₃), 4.6 gram ethyl alcohol (C₂H₅OH) and 12 grams chloroform (CHl₃) has mole fraction and mole percent of acetone

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0.11, 10%

0.33, 33%

0.22, 22%

0.11, 33%

The less reactivity of transition metal is due to

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High heats of sublimation

High ionization energies

Low heats of salvation

All these

P₂O₅is heated with water to give

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Hypophosphorus acid

Phosphorus acid

Hypophosphorus acid

Orthophosphorus acid

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

Iron, once dipped in concentrated H₂SO₄, does not displace copper from copper sulphates solution, because

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It less reactive than copper

A layer of sulphates is deposited on it

An inert layer of iron oxide is deposited on it

All valence electrons of iron are consumed

Which is not a calcareous material

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Lime

Clay

Marble

Marine shell

Fe can displace Cu form CuSO4solution because

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Fe is ferromagnetic

Fe is below Cu in electrochemical series

Fe is above Cu in electrochemical series

Fe exists in divalent oxidation state

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