Question # 1

Formula of paltimic acid is:

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C₁₁H₂₂COOH

C₁₃H₂₇COOH

C₁₅H₃₁COOH

C₁₇H₃₅COOH

At equilibrium rate of evaporation and rate of condensation

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Become very high

Become very low

Become equal

Can never be equal

Ozone is present in layer around earth:

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atmosphere

tropospher

stratosphere

thermosphere

If the volume of 2 moles of an ideal gas at 540 K is 44.8 litre then its pressure will be

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1 atmosphere

2 atmosphere

3 atmosphere

4 atmosphere

Neutralization of acid-base is

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Spontaneous

Exothermic

Non spontaneous

Both "a" and "c

2-Propenol, on rearrangement, yields

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Propanal

Propanone

2-propano

Both A and B

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

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Carbon

Hydrogen

Nitrogen

Sulphur

Spectrometry method is applicable if a reactant or a product absorbs radiation

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Ultraviolet

Visible

Infrared

Any of these

Amorphous means

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arranged

ordered

shaped

shapeles (no arrangements)

Denaturation of proteins is often characterised by

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Loss of biological activity

Aiways being irreversible

Being ereater the lower the temperature

Changes in primary structure

Image a man is sitting in a room. The room is closed from all sides, no entry no exit of any gas. If the room expands suddenly then:

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he will be frightened

he will feel cool

his blood pressure will decrease

he will feel warmth

Ultraviolet radiation from sun causes a reaction that produces

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Fluorides

Carbon monoxide

Sulphur dioxide

Ozone

How much of NaOH is required to neutralize 1500 cm³of 0.1 N HCl?

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60 g

6 g

4 g

40 g

[Zn(NH₃)₄]³⁺possess geometry

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Square plannar

Hexagonal

Tetrahedral

None of these

Two solutions of NaCl and KCl are prepared separately by dissolving 0.1 M of the solute in water. Which of the following statements is not true for these solution

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KCl solution will have higher boiling point than NaCl solution

Both the solutions have same boiling

KCl and NaCl solution possess same vapour pressure

KCl solution possess same freezing point at NaCl solution

C₁₈and onward hydrocarbons are normally

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Gases

Liquids

Solids

Plasma

Permonosulphuric acid is known as

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Marshall's acid

Carlo's acid

Sulphuric acid

None of these

Purine derivative among the following bases is

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Thymine

Uracil

Guanine

Cytosine

Which of the following statements is no correct regarding bonding molecular orbitals?

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Bonding molecular orbitals possess ls energy than atomic orbitals from which they are formed.

Bonding molecular orbitals have low electron density between the two nuclei.

Every electron in bonding molecular orbitals contributes to the attraction b.w atoms.

Bonding molecular orbitals are formed when the electron waves undergo constructive interference.

Aldehydes which do not haveα-hydrogen undergo

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Aldol combination

Cannizzaro's reaction

Substitution

Elimination

When 6d orbital is complete, the entering electron goes into:

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7f.

7s.

7p.

7d.

Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

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XY

X₂Y

X₂Y₃

XY₂

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