Question # 1

Select a basic amino acid.

Choose an answer

Glycine

Cystine

Alanine

Lysine

Relative order of acidity of HF, HCl, HBr, and HI acids is

Choose an answer

HCl > HBr > HI > HF

HF > HCl > HBr > HI

HI > HBr > HCl >HF

HF > HI > HCl > HBr

_____ remove the remaining color producing a water white sugar syrup

Choose an answer

Carbon filters

Centrifuge

Annealing

Refining

Which element out of the following can exhibit a maximum co valency of seven.

Choose an answer

Chlorine

Fluorine

Sulphur

Both Cl and F

The inert gasses AR, Ka, and Xe form solid compounds with certain organic molecules under pressure..

Choose an answer

Halides

Hydrates

Clathrates

All of above

The large increase in the rate of a reaction on rise in temperature is due to.

Choose an answer

The lowering of activation energy

The decreases in mean free path

The increase in collision frequency

The increase in the number of molecules having more than the threshold energy

In the kinetic study of a reaction A _____________ products.

A straight line was observed when a graph between time and 1/C2 was plotted. the reaction is.

Choose an answer

Second order

First order

Third order

Zero order

What is clinker.

Choose an answer

Roasted calcareous material

Roasted argillaceous material

Roasted calcareous and argillaceous material

Roasted gypsum

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

Choose an answer

Fluorescene

Scattering

Phosphorescence

Chemiluminescence

Which of the following statements correct regarding copper.

Choose an answer

It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

Which of the following statement is not true for carbon.

Choose an answer

Its forms compounds with multiple bonds

Its ionization energy is very high

It undergoes catanation

It shows inert pair effect

The purification of Bauxite can be carried out.

Choose an answer

Baeyer's process

Hall's process

Serpek's process

Any of above

The process of identifying the component present in a sample is called.

Choose an answer

Quantitative analysis

Qualitative analysis

Volumetric analysis

Gravimetric analysis

Estimation of nitrogen in proteins is generally arrived out by the method.

Choose an answer

Duma's method

Van Slyke method

Kjeldahl's method

Carius method

Pick out the incorrect statement regarding ozone.

Choose an answer

O3 is an unstbale dark blue diamagnetic gas

The central oxygen in O3 is sp3 hybridized

It cause the tailing of mercury

It does not react with KOH

Carbohydrates are characterized by the presence of.

Choose an answer

Hydroxyl group

Carbony group

Asymmetric carbon

All of these

Which type of elements form ionic hydrides.

Choose an answer

Transitionelements

Metalloids

Elements with high electronegativity

Elements with high electropositivity.

The energy gap between tag and eg sets in denoted by

Choose an answer

A-

10 Dq

Both A and B

None of above

The presence of which of the following in drinking water is responsible for mottling of teach.

Choose an answer

Mercury

Iodine

Chlorine

Flourine

Which of the following range is correct for macro analysis.

Choose an answer

Minimum 100 mg

Minimum 10 mg

Minimum 1 mg

Minimum 1000 mg

The main constituent of glass is.

Choose an answer

Silica

Silicon

Magnesia

Alumina

The decomposition of dimethyl ether at 504 oC is first order with a half -life of 1570 second. What fraction of an initial amount of dimethyl ether remain after 47-10 seconds.

Choose an answer

1/3

1/6

1/8

1/16

Select the major product obtained from the addition of HBr to I -Methyl cyclohexene

Choose an answer

1-bromo -2- methyl cyclohexane

6- bromo-i- methyl cyclohex -i- ene

3- bromo -1- methyl cyclohex - 1- ene

I-bromo -I- methyl cyclohexane

The conductance of 1 cm3 of an electrolytes solution is called its.

Choose an answer

Specific resistance

Specific conductance

Molar conductance

Equivalent conductance

Stainless steel contains.

Choose an answer

Fe + Cr+ Ni

Fe + Ni + Cu

Fe + Cr+ Cu

Cu + C + Ni

Layer of the C -atom in graphite are hold together by

Choose an answer

Covalent bonds

Free electrons

Ionic bond

Van Dar Waals forces

The multiplicity of the electronic state is equal to.

Choose an answer

S + 1

2S + 1

2S - 2

2S + 2

Sulphur can exist in

Choose an answer

One phase

Two phase

Three phase

Four phase

Which of the following element is usually determined by flame photometry.

Choose an answer

Li

Na

K

All above elements

In a system of designating wrought aluminum alloys. what does the second digit represents.

Choose an answer

The purity of aluminum

The identity of the alloy

The modification of the alloy group or impurity limits

None of above

Which of the following is not an androgen i.e. male sex hormones.

Choose an answer

Androsterone

Testosterone

Oestrone

All of these are make hormone

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