Question # 1

Which sequence of step is correct for the manufacture of cement:

Choose an answer

Crushing, mixing, heating, grinding

Crushing, heating, mixing, grinding

Crushing, grinding, mixing, heating

Mixing, heating, grinding, crushing

Dichlorodifluoromethane, CC/2F2 has been used in aeroso propellants and as a refrigerant.
Which statement helps to explain why dichlorodifluromethane is chemically inert ?

Choose an answer

The carbon-fluorine bond energy is large

The carbon-fluorine bond has a law polarity

Fluorine is highly electronegative

Fluorine compound are non-flammable

The concentration of dissolved molecular oxygen in water which acts as the most important oxidizing agent ranges from

Choose an answer

2 ppm - 6 ppm

2 ppm - 4 ppm

4 ppm - 8 ppm

2 ppm - 3 ppm

Sugar crystals belong to the system

Choose an answer

cubic

monoclinic

triclinic

orthorhombic

The strength of dipole-dipole forces depends upon

Choose an answer

Electro negativity difference

Distance between atoms

Electropositivity difference

Both A & B

How many zones through which charge passes in a rotary kiln.

Choose an answer

3

4

5

6

Which is the optimum temperature for the activity of enzyme

Choose an answer

20 - 35°C

10 - 15°C

55 - 70°C

35 - 55°C

Which one of the following has the lowest pH values

Choose an answer

0.1 M HCI

0.01 M HCl

0.1 M KOH

0.01 M KOH

Silk is the example of:

Choose an answer

mineral fiber

vegetable fiber

animal fiber

none of above

The most unsymmetrical one in crystal system is

Choose an answer

triclinic

Li, Na, K

monoclinic

hexagonal

When equal proportion of DH3_ l and C2H5 ___ l are treated with Na metal in preasence4 of dry ether, the number of possible hydrocarbons obtained will be:

Choose an answer

5

4

3

2

The word paper is derived from the name of which reedy plany

Choose an answer

Rose

Sun flower

Papyrus

Water hyacinth

β-D-glucose is a monomer for

Choose an answer

Strach

Cellulose

Glycogen

Protein

Alkaline earth metals posses two electrons in their outermost

Choose an answer

F-orbital

D-orbital

S-orbital

P-orbital

The period table contains elements in vertical column. these vertical column are called

Choose an answer

Groups

Periods

Blocks

Sub group

Angle 120° is observed in molecules :

Choose an answer

CH₄

CH_3-CH₃

CH -CH

CH_{2 =}CH₂

Chemical reactivity of elements depends upon their characteristic:

Choose an answer

Shape.

Color.

Electronic configuration.

Sizes

Compound X has molecular formula C₁₀H₁₄O and is unreactive towards mild oxidising agents. What is the structure of the compound formed by dehydration of X

Choose an answer

An ionic compound A+B is most likely to be formed when

Choose an answer

The ionization energy of A is high and electron affinity of B is low.

The ionization energy of A is low and electron affinity of B is high.

Both ionization energy of A and electron affinity of B are high.

Both ionization energy of A and electron affinity of B are low.

Glyptal polymer is obtained from glycerol on reacting with

Choose an answer

Malonic acid

Phthalic acid

Maleic acid

Acetic acid

The number of isotopes of gold is

Choose an answer

3

1

2

4

If four moles of sulpur dioxide are oxidised to sulphur trioxide, how many moles of oxygen molecules are required

Choose an answer

0.5

1.0

1.5

2.0

More Classes

Other Links

Chemistry General Science Test Medium Mode 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