Question # 1

Commercial incinerators produce.

Choose an answer

Smoke

CO

NOx

All above

Which of the following detector is used for compounds containing electronegative atoms.

Choose an answer

Mass specdtrometer

ECD

TCD

UV-detector

White Phosphorus is kept under

Choose an answer

Cold water

Ammonia liquor

Ethanol

Kerosene

An auxochrome is a group which

Choose an answer

Absorbs in UV region

Absorbs in visible region

Absorbs in IR region

Increase absorption wavelength of chromophore

The hybridization of S in SO2 is.

Choose an answer

sp

sp2

sp3

dsp2

On industrial scale chlorine is prepared by

Choose an answer

Dennis method

Deacon's process

Plantner's process

Aludels process

Which of the following has maximum number of unpaired electrons.

Choose an answer

Fe3+

Fe2+

Co2+

CO3+

Which of the following statement is not related with industrial ecology.

Choose an answer

Study of interactions between human activities and its environment

Industrial ecology seeks to optimize the total industrial materials cycle from virgin material to finished product

Industrial impacts on the environment

Economic system are viewed in isolating from their surrounding

Which one of the following woul dmake an S_N2 mechanism more likely

Choose an answer

Bulky substituents near the halogen

A polar solvent

A tertiary carbocation intermediate

A reactive nucleophile

Soap and detergent remove the direct form clothes due to.

Choose an answer

Osmosis

Gravity

Lowering of interfacial tension

Diffusion

Rutherford proposed the nuclear model of the atom to account for the result of experiments in which the alpha particles are scattered from metal foils.Which of the following statements in not related to Rutherford observation.

Choose an answer

An atom consists of central core or nucleus around which the protons exist.

The nucleus has most of the mass of the atom

the nucleus consists of protons and neutrons.

Each distinct atom has a specific number of protons.

What element is the most abundant by mass in the Earth's crust.

Choose an answer

Fe

H

O

K

Indicate the false statement about corrosion.

Choose an answer

Plastics and ceramics are immune to many forms of corrosion because they are not good conduction of electricity.

The corroded member in a corrosion cell is the cathode

Passivity is a prerequisite for the corrosion protect on many metals

None of these

Al2Cl6 is an example of

Choose an answer

Ionic bond

Covalent bond

Co ordinate bond

Metallic bond

Sulphur can exist in

Choose an answer

One phase

Two phase

Three phase

Four phase

Identify the incorrect statement regarding crystallization from the following.

Choose an answer

It is an important procedure for purifying solids

The impurities are removed by filtering the solution

Crystals are separated by filtration

In crystallization method, the solid is dissolved in a solvvent in which it is soluble at all temperature.

The concept of telluric helisx was developed by

Choose an answer

Lother meyer

A.E. de Chancourtois

New lands

Doberieiner

Which of the following has the highest melting point.

Choose an answer

NaCl

KCl

MgO

BaO

The particle motion in solids is

Choose an answer

Only vibratory

Only translator

Vibratory and rotatory

Only translatory

Coordination compound show

Choose an answer

Structural isomerism

Stereo isomerism

Both A and B

None of above

High density polyethylene has which type of structure.

Choose an answer

Linear

Branch chain

Cross linked

Any one of these

The phenomenon of x-ray diffraction was studied by

Choose an answer

Huygen

Bragg

Max Planck

None of above

Which of the following reactions have small enthalpy change.

Choose an answer

NaOH with HCl

NaOH with CH3 COOH

HCl with NH4 OH

None of these

For a given mass of a gas, if pressure in reduced to half and temperature in doubled, then volume.

Choose an answer

2V²

4V

8 V

V²

Which of the following relation corresponds to Faraday law of electrolysis.

Choose an answer

m = ZI t

E = mc²

E = ho

None of the above

Which of the ionic possesses highest bond energy.

Choose an answer

C-C

Si -Si

Ge - Ge

Sn -Sn

A molecule returns from the excited singlet state to the ground singlet state with emission of light This process is known as

Choose an answer

Fluorescene

Scattering

Phosphorescence

Chemiluminescence

Which of the following are neutral ligands.

Choose an answer

NH3

H2O

CO & NO

All of above

Used in Geiger counter to detect radioactivity

Choose an answer

He

Ne

Ar

Kr

What is the effect of manganese in cast iron.

Choose an answer

^{To affect the machinability ductility and shrinkage depending on form}

To reduce hardness by combining with sulfur below 0.5% and increase hardness above 0.55

To dioxide molten cast iron

Have no effect

Which of the following method of analysis is based on diffraction of radiation.

Choose an answer

Mass spectrometry

Polarography

Potentiometry

Raman scattering

More Classes

Other Links

PPSC Chemistry Full Book 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