AFNS Chemistry Test 1 | Pro Genius Students

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To pass the quiz, you need to answer at least 50% of the questions correctly. However, we recommend that you aim for a higher score, as this will give you a better chance of success on the Pak Army test.

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Chemistry Test 1

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1 / 50

Which of the species is not paramagnetic?

Ne²+

Be+

As+

Cl-

2 / 50

Industrial waste water contains:

Occluded & dissolved gases

All of these

Inorganic salts & organic compounds

Pathogens

3 / 50

MASS of sulpher is.......

92g

23g

72g

32g

4 / 50

Carbon atoms of diamond are:

sp1 hybridized

Not hybridized

sp2 hybridized

sp3 hybridized

5 / 50

which of the following element have unpaired electrons in s subshell

Fe

Mn

Co

Cr

6 / 50

The whole universe is made up of almost Hydrogen?

70%

60%

90%

40%

7 / 50

Find the temperature at which the rate of effusion of N₂ is 1.625 times to that of SO₂ at 500°C

520°C

820°C

620°C

690°C

8 / 50

Which carbohydrate is the least sweet?

Starch

Fructose

Glucose

Sucrose

9 / 50

At equilibrium, the amount of product and reactant becomes........

NOT EQUAL

Increase 4 time

EQUAL

increase 2 time

10 / 50

Which of the following best describes the nature of ammonium chloride?

Neutral substance

Strong base

Weak acid

Strong acid

11 / 50

Neutron was discovered by Chadwick in:

1932

1987

1923

1935

12 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Aldehydes

Ketones

Aromatic compounds

α-Hydroxy aldehydes

13 / 50

If absolute temperature of a gas is doubled and the pressure is reduced to one half the volume of gas will:

decrease two times

decrease four times

increases four times

increases two times

14 / 50

In 32.5 g of CH4 the percentage of carbon is.......

74.87%.

84.87%.

77.87%.

54.87%

15 / 50

Benzene is good solvent for:

Fats

Resins

Iodine

All

16 / 50

Which of the following elements react with steam to produce H2 gas?

Pd

Sn

All of the above

Ni

17 / 50

How many structural isomers are present for trichloro propane C3H5Cl3.

0

8

5

3

18 / 50

Oxidation number of CARBON in GLUCOSE is.......

21

6

4

0

19 / 50

Seventh period consists of……………….normal elements?

2

4

8

3

20 / 50

According to molecular orbital theory, what is the bond order of Li2+?

5.5

1

5

0.5

21 / 50

Dipole moment of CO2 is......

7

4

2

0

22 / 50

On electrolysis of NaOH, hydrogen is liberated

At anode

none of them

At cathode

in the electrolyte

23 / 50

Which halogen has the smallest electron affinity?

Cl

I

F

Br

24 / 50

How many types of amino acids form the proteins in the body?

60

10

20

30

25 / 50

Molarity of 10g of NAOH is......

1.25

7.32

0

2.43

26 / 50

The ionization energy of Hydrogen is ?

12.54ev

10.54ev

13.6ev

17.56ev

27 / 50

Valency of carbon is:

4

8

2

6

28 / 50

Find PH of 0.001m of HCL:

8

4

3

2

29 / 50

The ratio of the water molecule in plaster of Paris and gypsum is

1:8

1:6

1:4

1:9

30 / 50

Which of the following is more acidic in nature?

p-nitrobenzene

Benzene

Cresol

Phenol

31 / 50

Which of the following is the best option for disinfecting your slab?

Sulphur

Vinegar (Acetic acid)

Bleach (Sodium hypochlorite)

Phenols

32 / 50

The mass of one mole of electron is

0.054 mg

0.184 mg

1.008 mg

0.54 mg

33 / 50

Presence of heavy metals in water causes

Nervous disorder

Cancer

Mental retardation

All of these

34 / 50

The molarity of CH4 is......

45.042g/mol

16.042g/mol

32.042g/mol

65.042g/mol

35 / 50

Ionization energy is lowest for

Alkaline earth metals

Halogens

Inert gases

Alkali metals

36 / 50

Oxidation state of sodium

+1

+4

+8

+5

37 / 50

Mark the correct statement:

CI- and CI are equal in size

Na+ is smaller than Na atom

Na+ is larger than Na atom

CI- is smaller than CI atom

38 / 50

Brine is used for industrial production of

HCL

NaOH

KCL

NHO

39 / 50

Which one of the following is an incorrect statement?

he ionization potential of beryllium is greater than that of boron

The electronegativity of fluorine is greater than that of chlorine.

The electron affinity of fluorine is greater than that of chlorine

The ionization potential of nitrogen is greater than that of chlorine

40 / 50

Which of the following enzymes converts maltose to glucose?

Diastase

Lactase

Zymase

Maltase

41 / 50

Which of the following is a mixture of low-boiling hydrocarbons?

Ethanol

Gasoline

Glycerol

Propanoic acid

42 / 50

Structural formula of cycloalkane is.....

CnH2n

CnHn

Cn2H5n

C8n6Hn8

43 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Ketones

Aldehydes

α-Hydroxy aldehydes

Aromatic compounds

44 / 50

“s” and “p” block elements are also called

Transition elements

Inert elements

Typical elements

Rare earth elements

45 / 50

What is the pH of a solution with 0.0001 M HCl?

7

0

3

4

46 / 50

Number of free electrons in nickel Ni2+

3

8

8

2

47 / 50

How many calories are in fat……………..?

4

9

8

6

48 / 50

Which of the following elements has the highest electronegativity?

Nitrogen (N)

Chlorine (Cl)

Oxygen (O)

Fluorine (F)

49 / 50

Which of the following is soft Coal?

Bituminous

Lignite

Peat

Anthracite

50 / 50

__________is study about energy of a chemical system

thermochemistry

Biochemistry

Organichemistry

None

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