Question # 1

Size of an anion is increased as compared to its atom because of the

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Addition of new shell

Repulsion of electrons in the valence shell

Decrease in nuclear charge

Increase in the unclear charge

Carboxylic acids react with acids releasing gas from it:

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H2O as steam

CO

CO2

O2

Which of the following is not charged particle

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Proton

Electron

Neutron

Hydrogen nucleus

It is common observation that rates of chemical reactions differ :

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Greatly.

A little bit.

Moderately.

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Aqueous bromine

Dilute HNO₃

Dilute HCI

CH₃COCI

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0.12

0.50

0.25

4.00

The presence of a double bond in a compound in the sign of:

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Saturation

Unsaturation

Subsitution

None

Which statement about the following equilibrium in correct?

2SO_{2 (g)}+ O_2(g)---------------2sO_3(g)H= - 188.3 KJ mol-1

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T value of K_{p falls witha rise in temperate.}

The value of K_{p falls withincreasing pressure}

Adding V_2O₅catalyst increase the equilibrium yield of sulfur trioxide

The value of K_{p is equal to}K_p

Which is the transition element among the following

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B

Al

Cu

Cs

Reaction of acids with alcohols is also known as

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Esterification

Saponification

Alkalization

None

Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH₄and with Tollen's reagent

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Both aldehydes and ketones

Aldehydes only

Ketones only

Neither aldehydes nor ketones

Th IUPAC name of the compound having formula (CH3) 3 C - CH = CH2 is

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1, 1-Dimethyl-3-butene

1,1,1-Trimethyl-3-propene

3,3,-Dimenthyl-1-butene

3,3,3,-Trimethyl-1-propene

Amiino acids are building blocks of:

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Protein

Carbohydrates

Lipids

Fats

The open chain compounds are also called

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Aliphatic

Alicylic

Aromatic

Both a and b

Ethylene reacts will 1% cold alkaline KMnO₄to give

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Oxalic acid

Acetone

Ethylene glycol

Formaldehyde

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

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SO₂

NO₂

CO

A and b only

The valence shell of hydrogen is half filled like those of

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IV - A

VIA

V - A

VIIA

Which element belong to 5d series

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V

Nb

Pd

Hf

Group l-A elements react with water fastly than the reaction of group ll-A elements because

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l_Aelements are more soft then ll_A

l_Aelements are non-metals

l_Aelements have 1 electron in their outermost s-orbital and are strongly electropositive

l_Aelements make ionic bond

Which of the following statements is most appropriate about effective nuclear charge? It depends upon

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The shielding constant

The atomic number

The charge on the nucleus

Both the nuclear charge and the shielding constant

In azeotropic mixture showing negative deviation form Raoult's law show

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Higher b.p. than either

Lower b.p. than either

No change in b.p.

None of these

For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test

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HCHO and CH₃CHO

CH₃CHO and CH₃COCH

CH₃COCH₃and C₆H₅COCH₃

CH₃COOH and CH₃COOCH₃

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0 dm³

3 dm³

2 dm³

3 dm³

Phenol is used in the preparation of

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Bakelite

Phenatherene

Cellulose

All of these

The charge over mass ratio of electron is:

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1.6 x 10^-1 C Kg^-1

9.1 x 10^-31 C Kg^-1

1.7588 x 10¹¹ C Kg^-1

6.62 x 10^-34 C Kg^-1

Which of the following does not exhibit the periodicity in properties of the elements?

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Ionisation energy

N/P ratio

Electronegativity

Atomic radius

Direct conversion of solid intro vapours is called:

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Crystallization

Sublimation

Obligation

Vapourization

Which functional group is present in glycerol tristearate

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Carboxylic acid

Alcohol

Aldehyde

Ester

For which mechanisms, the first step involved is the same:

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E₁ and E₂

E₂and SN₂

E₂ and E₁

E1 and SN₁

The hydrocarbons having double bonds normally end with suffix

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Ane

Ene

Yne

Oic

Reaction of Grignard's reagent eith aldehyds other formaldehyde gives: Reaction of Grignard's reagent with formaldehyde gives:

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Pri-alcohol

Sec-alcohol

Ter-alcohol

Carboxylic

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