Considering Ellingham diagram, which of the following metals can be used to reduce alumina? 

(a)

Fe

(b)

Cu

(c)

Mg

(d)

Zn

Na[Ag(CN)₂] is _________.

(a)

Sodium aurocyanide

(b)

Sodium meta aluminate

(c)

Aluminosilicate

(d)

Sodium dicyano argentate

Which of the following is not sp² hybridised?

(a)

Graphite

(b)

graphene

(c)

Fullerene

(d)

dry ice

All elements except carbon have the tendency to show maximum covalency of six ______

(a)

due to presence of vacant d-orbitals

(b)

due to absence of vacant d-orbitals

(c)

due to presence of partially filled d-orbitals

(d)

due to presence of completely filled d-orbitals

In acid medium, potassium permanganate oxidizes oxalic acid to _______.

(a)

oxalate

(b)

Carbon dioxide

(c)

acetate

(d)

acetic acid

The correct statement is_______.

(a)

Cu₂Cl₂ and Ag₂S are coloured

(b)

Upon strong heating paramagnetic gases are evolved by NaNO₃ and AgNO₃

(c)

Green vitriol and blue vitriol are isomorphus

(d)

KMnO₄ and K₂Cr₂O₇ are coloured due to

Which of the following is paramagnetic in nature?

(a)

[Zn(NH₃)₄]²⁺

(b)

[Co(NH₃)₆]³⁺

(c)

[Ni(H₂O)₆]²⁺

(d)

[Ni(CN)₄]^2-

The oxidation state of the central metal ion in the complex [Co(H₂O)(CN)(en)₂]²⁺ is________.

(a)

0

(b)

+1

(c)

+2

(d)

+3

For the reaction, 2NH₃ ⟶ N₂ + 3H₂, if \(\frac { -d[NH_{ 3 }] }{ dt } \) = k₁[NH₃], \(\frac { d[N_{ 2 }] }{ dt } =k_{ 2 }[NH_{ 3 }],\frac { d[{ H }_{ 2 }] }{ dt } \)= k₃[NH₃] then the relation between k₁, k₂ and k₃ is _________.

(a)

k₁ = k₂ = k₃

(b)

k₁ = 3k₂ = 2k₃

(c)

1.5k₁ = 3k₂ = k₃

(d)

2k₁ = k₂ = 3k₃

For an exothermic chemical process occurring in 2 steps as
(i) A +B ⟶ X (slow) ;
(ii) X ⟶  AB (fast)
The progress of the reaction can be best described by (x- intermediate).

(a)

(b)

(c)

(d)

None of these

Equal volumes of three acid solutions of pH 1,2 and 3 are mixed in a vessel. What will be the H⁺ ion concentration in the mixture?

(a)

3.7 × 10^-2

(b)

10^-6

(c)

0.111

(d)

none of these

Which one of the following formula represents Ostwald's dilution law for a binary whose degree of dissociation is a and concentration C.

(a)

\(K=\frac{(1-α)C}{α}\)

(b)

\(K=\frac{α^2C}{1-a}\)

(c)

K = \(\frac{(1-a)C}{a^2}\)

(d)

K = \(\frac{α^2C}{(1-α)c}\)

SHE is _______.

(a)

Standard Helium Electorde

(b)

Standard Hydrogen Electrode

(c)

Standard Mercury Electrode

(d)

none of these

The oxidation of sodium sulphite by air is retarded by _______.

(a)

MnO₂

(b)

H₂S

(c)

Alcohol

(d)

AS₂O₃

In the reaction sequence, Ethane \(\overset { HOCl }{ \longrightarrow } A\overset { x }{ \longrightarrow } \) ethan -1, 2 - diol. A and X respectively are ________.

(a)

Chloroethane and NaOH

(b)

ethanol and H₂SO₄

(c)

2 – chloroethan -1-ol and NaHCO₃

(d)

ethanol and H₂O

The number of secondary alcoholic group in glycerol is _______.

(a)

1

(b)

2

(c)

3

(d)

0

Which of the following represents the correct order of acidity in the given compounds

(a)

FCH₂COOH > CH₃COOH > BrCH₂COOH > ClCH₂COOH

(b)

FCH₂COOH > ClCH₂COOH > BrCH₂COOH > CH₃COOH

(c)

CH₃COOH > ClCH₂COOH > FCH₂COOH > Br-CH₂COOH

(d)

Cl CH₂COOH > CH₃COOH > BrCH₂COOH > ICH₂COOH

Pick out the compound that reduces Tollen's reagent and Fehling's solution.

(a)

CH₃CHO

(b)

CH₃COCH₃

(c)

CH₃COOH

(d)

both (a) and (b)

The reduction of CH₃ - CH2 - C ☰ N with sodium and alcohol results in the formation of

(a)

\({ CH }_{ 3 }-\underset { \overset { | }{ { NH }_{ 2 } } }{ CH } -{ CH }_{ 3 }\)

(b)

CH₃- CH₂- CH₂- OH + N₂

(c)

CH₃ - CH₂ - CH₂ - NH₂

(d)

CH₃ - CH₂ - NH₂

Vitamin B₂ is also known as ______.

(a)

Riboflavin

(b)

Thiamine

(c)

Nicotinamide

(d)

Pyridoxine

An example for reducing disaccharide is

(a)

glucose

(b)

fructose

(c)

sucrose

(d)

lactose

The properties of protein are determined by___________

(a)

nature of the amino acids

(b)

the position of NH₂ group

(c)

the position of COOH group

(d)

all

2-acetoxy benzoic acid is used as an _________

(a)

anti malarial

(b)

antihistamine

(c)

antipyretic

(d)

antidepressant

Proteins which act as biological catalysts are called ________

(a)

enzymes

(b)

hormones

(c)

vitamins

(d)

polymers

Cellulose is an example of _____ polymer.

(a)

synthetic

(b)

Natural

(c)

semisynthetic

(d)

none of the above