Question # 1

Phenols are derivative of:

Choose an answer

Alkanes

Alkenes

Alkynes

Benzene

Linear geometry is present in:

Choose an answer

Sp³

Sp²

Sp

D²sp³

The coinage metals are

Choose an answer

Ni, Pd, Pt

Cu, Ag, Au

Zn, Al, Pb

Fe, Si, Sn

Gradual addition of electronic shells in the nobel gases causes a decrease in their

Choose an answer

Ionization energy

Atomic radius

Boiling point

Density

The substances which soften the polymer are called

Choose an answer

Stabilizers

Plasticizers

Retarders

Pigments

When a bond breaks

Choose an answer

Heat is evolved

Heat is absorbs

No change in heat contents takes place

Temperature increases

Sulphur dioxide affects

Choose an answer

Cell wall

Plasmodesmata

All membrane systems

Nucleus

A buffer of a 0.09 molar acetic acid and 0.11 molar sodium acetate has pH = 4.83. If 0.01 mole NaOH in 1 dm³of the buffer solution is added, then pH of the buffer becomes

Choose an answer

4.74

4.92

5.0

4.0

Choose an answer

Shift reaction toward forward direction

Shift reaction backward

Lower the value of K_c

No change in reaction

Carboxylic acids on complete reduction in the presence of HI and red Phosphours gives:

Choose an answer

esters

alcohols

alkanes

aldehydes

95% ethanol is called:

Choose an answer

Rectified other

Diesel

Rectified spirit

Petrol

The element with highest electron affinity among the halogen is

Choose an answer

F

Cl

Br

I

The amount of heat required to convert one mole of solid directly into its vapour state at STP is called as

Choose an answer

Molar heat of vaporization

Standard heat of vaporization

Heat of reaction

Heat of neutralization

Which of the following molecules have multiple bonds

Choose an answer

CH₄

C₂H₄

C₂H₆

CCI₄

In Lucas test teriary alcohol make an oily layer

Choose an answer

Immediately

In 10 mins

On heating

Not

The fibre which is made form acrylonitrile as monomer

Choose an answer

PVC

Rayon fibre

Acrylic fibre

Polyester fibre

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Choose an answer

Ag⁺

Cu²⁺

Al³⁺

Si⁴⁺

Coordinate covalent bond is present in the molecules

Choose an answer

H₂O

BF₃

SiO₂

SO₂

Oxidation number of oxygen in OF₂is

Choose an answer

+1

-1

+2

-2

In a Galvanic cell

Choose an answer

Chemical energy is converted into electricity

Chemical energy is converted into heat

Electrical energy is converted into heat

Electrical energy is converted into chemical energy

Turnbull's blue is a compound called?

Choose an answer

Ferricyanide

Ferrous ferricyanide

Ferrous cyanide

Ferri - Ferro cyanide

Which statement explains the observation that magnesium hydroxide dissolve in aqueous ammonium chloride, but not in aqueous sodium chloride

Choose an answer

The ionic radius of the NH₄⁺ion is similar to that of Mg²⁺but not that of Na⁺

NH₄Cl dissociates less fully than NaCl

The ions Na⁺and Mg²⁺are isoelectronic (have the same number of electrons)

The ion NH⁺₄acts as an acid

The iron obtained from blast furnace is

Choose an answer

Pig iron

Wrought ion

Soft ion

Steel

Etherification is catalyzed by

Choose an answer

Acids

Gases

Salts

None of the these

Out of 110 known elements, transition elements are

Choose an answer

40

60

50

80

The basic difference between synthetic and natural fertilizer is in their

Choose an answer

Rae material

Crop application

Usage

Shapes

The sum of mole percent of all the components of solution is always equal to :

Choose an answer

Less than 100

One

100

10

Which one of the following substances is used to decolourizing agent

Choose an answer

Abestos

Animal charcoal

conc. H2SO4

Silica gel

Which of these polymers is an addition polymer

Choose an answer

Nylon 6,6

Polystyrene

Terylene

Epoxy resin

Salol is prepared from

Choose an answer

Salicylic acid and phenol

Salicylic acid and methyl alcohol

Both

None

When aqueous NaCl is electrolyzed, which of the following ions get discharged at anode :

Choose an answer

H⁺

Na⁺

OH^-

Cl^-

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