Question # 1

Cracking products are :

Choose an answer

Only alkanes

Only alkenes

Alkanes and alkenes

Alkynes

Which of the following method is most appropriate for the manufacture of methane?

Choose an answer

By reduction of CH2CL2

Wurtz reaction

Liquification of natural gas

None of these

Which one of the following particles has amass 1/1836 time, that of hydrogen?

Choose an answer

Neutron.

Proton.

Electron.

Positron.

Same amount of electric current is passed through solutions of AgNO₃and HCl. If 1.08 g of silver is obtained in the first case, the amount of hydrogen liberated as S.T.P in the second case is

Choose an answer

112 cm³

22400 cm³

224 cm³

1.008 g

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. the easter is

Choose an answer

Ethyl methonoate

Methyl ethanoate

Propylamine

Ethylamine

Choose an answer

Hear of reaction

Heat of formation

Heat of neutralization

Heat of combustion

As a fixing agent in photography, sodium thisoulphate is used for

Choose an answer

Dissolving out unreacted silver bromide

Converting silver

Reducing solubility of AgBr

Preventing overdeveloping and fogging

Shahi Qilla may be destroyed by

Choose an answer

Flood in Ravi

Temperature mediated spoilage of marble

Air pollutants from Lahore chemical industries

All the above

Aqueous solution of glucose C₆H₁₂O₆, boils at 100.052°C. The solution contains

Choose an answer

180 grams glucose in 1 kg water

18 grams glucose in 1 kg water

1.8 grams glucose in 1 kg water

3.6 grams glucose in 1 kg

Choose an answer

4-methyl pentene

2-methyle-1-butene

2-methyl propane

None of the above

The detection of functional group is called :

Choose an answer

Numerical analysis.

Qualitative analysis.

Combustion analysis.

Quantitative analysis.

Which functional group is present in glycerol tristearate

Choose an answer

Carboxylic acid

Alcohol

Aldehyde

Ester

An oxidixing agent

Choose an answer

K₂Cr₂O₇

H₂SO₄

FeSO₄

K₂SO₄

A fibre which is made from acrylonitrile as monomer

Choose an answer

PVC

Rayon fibre

Acrylic fibre

Polyester fibre

When electron jumps from n₂= 2,3,4,5,.... orbit to n₁= 1 orbit in the hydrogen atom, the radiations emitted give the spectral lines

Choose an answer

Lyman series

Blamer series

Paschen series

Brackett series

Which one of the following substances is used to decolourizing agent

Choose an answer

Abestos

Animal charcoal

conc. H2SO4

Silica gel

Electrochemistry is concerned with the conversion of electrical energy into chemical energy in :

Choose an answer

Galvanic cell

Electrolytic cell

Voltaic cell

Both (a) and (c)

The acid present in vinegar is

Choose an answer

CH₃COOH

HCI

H₂SO₄

HCOOH

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a:

Choose an answer

Fiber

Plastic

Vanish

Polyamide resin

Shape of CIO₃is

Choose an answer

Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

Cracking done at low pressure and with a catalyst is called _______ cracking

Choose an answer

Thermal

Catalytic

Steam

None of them

An electron has principal quantum number 3. The number of its 1 subshell and 2 orbitals would be respectively

Choose an answer

3 and 5

3 and 7

3 and 9

2 and 5

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

Choose an answer

Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

Biodegradable pollutant is

Choose an answer

Plastic

Asbestos

Sewage

Mercury

Alkenes normally have ______ geometry

Choose an answer

Tetrachedral

Linear

Planer

None

Aldehydes can be distinguished from ketones by using

Choose an answer

Schiff's reagent

Conc. H₂SO₄

Anhy. ZnCl₂

Resorcinol

Out of Cu, Ag, Fe and Zn the metal which can displace all others from theri salt solution is

Choose an answer

Ag

Cu

Zn

Fe

In Bohr model of hydrogen atom the distance between adjacent orbits increases away from the nucleus, the energy difference between the orbits

Choose an answer

Increases

Decreases

Reaming same

Orbits coincide

The most distinctive character among the elements is their division into

Choose an answer

Metals and non-metals

Solids, liquids and gases

Atoms and molecules

Active and inactive elements

A transition metal complex can be recognized by various terms. Which is not the proper term

Choose an answer

Central metal ion

Coordination number

Ligand

Geometry of complex

Which one of the following mixture shows positive deviation form Rault's law and forms an azetrope with minimum boiling point

Choose an answer

Methanol + CCI₄

Methanol + acetone

Ether + HCI

Acetone + chloroform

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