Question # 1

For what value ofK_{c almost forward reaction is complete :}

Choose an answer

K_{c =}10³⁰

K_{c =}10^-30

K_{c =}0

K_{c =}1

Which is non typical transition element :

Choose an answer

Ni

Co

Y

Fe

Which of the following is the use of electrolysis?

Choose an answer

Eletrorefining

Electroplating

Both A and B

None of the above

In ter-butyl alcohol, the tertiary carbon is bonded to

Choose an answer

Two hydrogen atoms

Three hydrogen atoms

One hydrogen atoms

No hydrogen atom

Choose an answer

1, 5-pentadiene

Penta-1, 4-diene

1, 1-pentadiene

1, 4-pentene

Pure water does not conduct electricity because it

Choose an answer

Has low boiling point

Is almost unionized

Is neutral

Is readily decomposed

When methane reacts with Cl₂in the presence of diffused light the products obtained are?

Choose an answer

Chloroform only

Carbon tetrachloride only

Chloromethane and dichloromethane

Mixture of a,b,c

Which statement is true about a free radical

Choose an answer

An atom with a positive charge

An atom with a negative charge

An atom with a lone pair of electrons

An atom with unpaired electron

The covalent bonds are

Choose an answer

Unidirectional

Bi-directional

Non-directional

Multi-directional

The overlapping of two partially filled atomic orbital is in such a way that the probability of finding the electron pair is maximum along the axis joining the two nuclei, the bond is

Choose an answer

Sigma bond

Pi bond

Ionic bond

Non-polar bond

Which of the following is not present in RNA?

Choose an answer

Uracil

Thymine

Ribose

Phosphate

The correct arrangement of increasing order of atomic radius among Na, K, Mg, Rb is

Choose an answer

Mg < K < Na < Rb

Mg < Na < K < Rb

Mg < Na < Rb < K

Na < K < Rb < Mg

Two moles of HI was heated in a sealed tube at 440°C till the equilibrium was reached. HI was found to be 22% decomposed. The equilibrium constant for dissociation is

Choose an answer

0.282

0.0796

0.0199

1.99

The depression of freezing point is directly proportional to

Choose an answer

Mole fraction of the solution

Molarity of the solution

Molality of the solution

Molarity of the solvent

Which is a protein?

Choose an answer

Nylon

Rayon

Natural silk

Terylene

The acid present in vinegar is

Choose an answer

CH₃COOH

HCI

H₂SO₄

HCOOH

Maximum variable oxidation state is of:

Choose an answer

Mn⁺²

Fe⁺³

Cr⁺¹

a and b

The alkaline earth elements have in their s-orbital

Choose an answer

One electron

Two electron

No electron

Three electron

A compound A has a molecular formula C₂Cl₃OH. It reduces Fehling solution and on oxidation produces a monocarboxylic acid B.A can also be obtained by the action of Cl₂on Ethanol. A is

Choose an answer

Chloral hydrate

CHCl₃

CH₃Cl

Chloroacetic acid

The coinage metals are

Choose an answer

Ni, Pd, Pt

Cu, Ag, Au

Zn, Al, Pb

Fe, Si, Sn

The concentration of reactants is increased by x, then equilibrium constant K becomes

Choose an answer

ln K/x

K/x

K + x

K

Choose an answer

0

1

2

3

Alkyl halides react with lithium dialkyl copper reagents to give

Choose an answer

Alkenes

Alkyl copper halides

Alkanes

Alkenyl halides

Which of the following is not a colligative property?

Choose an answer

Depression in freezing point

Elevation of boiling point

Osmotic pressure

Modification of refractive index

What is the molarity of a solution containing 15.0 g urea in 500 cm³of solution

Choose an answer

0.5 M

1 M

1.5 M

2 M

The number of isotopes of gold is

Choose an answer

3

1

2

4

Cannizzaro's reaction in not given by

Choose an answer

Formaldehyde

Acetaldehyde

Benzaldyhyde

Trimethylacetaldehyde

The geometrical shape of a transition complexion is related to the state of hybridizing of the central atom. What is trigonal bipyramidal

Choose an answer

sp³

dsp²

dsp³

d²sp³

Peat contains about

Choose an answer

60% carbon

80% carbon

78% carbon

50% carbon

The largest number of molecules are present in

Choose an answer

3.6 g of H₂O

4.8 g of C₂H₅OH

2.8 g of CO

5.4 g of N₂O₅

Ether shows the phenomenon of

Choose an answer

position isomerism

Chain isomerism

Metamerism

Cir-trans isomerism

More Classes

Other Links

ECAT Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer