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

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

EQUAL

Increase 4 time

increase 2 time

NOT EQUAL

2 / 50

Find PH of 0.001m of HCL:

4

2

8

3

3 / 50

__________is study about energy of a chemical system

Biochemistry

thermochemistry

Organichemistry

None

4 / 50

Oxidation state of sodium

+4

+1

+8

+5

5 / 50

Presence of heavy metals in water causes

All of these

Mental retardation

Cancer

Nervous disorder

6 / 50

Number of free electrons in nickel Ni2+

3

8

2

8

7 / 50

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

690°C

620°C

820°C

520°C

8 / 50

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

Gasoline

Ethanol

Propanoic acid

Glycerol

9 / 50

How many structural isomers are present for trichloro propane C3H5Cl3.

3

0

8

5

10 / 50

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

Typical elements

Inert elements

Rare earth elements

Transition elements

11 / 50

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

5.5

5

0.5

1

12 / 50

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

1:6

1:4

1:8

1:9

13 / 50

The mass of one mole of electron is

1.008 mg

0.184 mg

0.054 mg

0.54 mg

14 / 50

Which of the following is soft Coal?

Peat

Bituminous

Lignite

Anthracite

15 / 50

Which of the following enzymes converts maltose to glucose?

Lactase

Zymase

Maltase

Diastase

16 / 50

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

Sn

All of the above

Ni

Pd

17 / 50

How many calories are in fat……………..?

8

6

4

9

18 / 50

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

1.25

0

2.43

7.32

19 / 50

Ionization energy is lowest for

Halogens

Inert gases

Alkali metals

Alkaline earth metals

20 / 50

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

77.87%.

84.87%.

74.87%.

54.87%

21 / 50

The whole universe is made up of almost Hydrogen?

90%

70%

60%

40%

22 / 50

The molarity of CH4 is......

16.042g/mol

32.042g/mol

45.042g/mol

65.042g/mol

23 / 50

Carbon atoms of diamond are:

Not hybridized

sp2 hybridized

sp1 hybridized

sp3 hybridized

24 / 50

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

Vinegar (Acetic acid)

Bleach (Sodium hypochlorite)

Sulphur

Phenols

25 / 50

Dipole moment of CO2 is......

4

7

0

2

26 / 50

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

8

4

2

3

27 / 50

Benzene is good solvent for:

Fats

Resins

All

Iodine

28 / 50

Neutron was discovered by Chadwick in:

1987

1923

1932

1935

29 / 50

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

Neutral substance

Strong base

Weak acid

Strong acid

30 / 50

Which carbohydrate is the least sweet?

Starch

Glucose

Fructose

Sucrose

31 / 50

Which of the following elements has the highest electronegativity?

Fluorine (F)

Oxygen (O)

Nitrogen (N)

Chlorine (Cl)

32 / 50

Which organic compound does not undergo the Cannizzaro reaction?

α-Hydroxy aldehydes

Ketones

Aldehydes

Aromatic compounds

33 / 50

MASS of sulpher is.......

32g

72g

23g

92g

34 / 50

Industrial waste water contains:

All of these

Inorganic salts & organic compounds

Occluded & dissolved gases

Pathogens

35 / 50

Which of the following is more acidic in nature?

Cresol

p-nitrobenzene

Benzene

Phenol

36 / 50

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

decrease four times

decrease two times

increases four times

increases two times

37 / 50

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

0

4

21

6

38 / 50

which of the following element have unpaired electrons in s subshell

Mn

Fe

Cr

Co

39 / 50

Which one of the following is an incorrect statement?

The electron affinity of fluorine is greater than that of chlorine

he ionization potential of beryllium is greater than that of boron

The electronegativity of fluorine is greater than that of chlorine.

The ionization potential of nitrogen is greater than that of chlorine

40 / 50

The ionization energy of Hydrogen is ?

10.54ev

13.6ev

12.54ev

17.56ev

41 / 50

Valency of carbon is:

8

2

6

4

42 / 50

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

20

30

10

60

43 / 50

Structural formula of cycloalkane is.....

CnH2n

Cn2H5n

C8n6Hn8

CnHn

44 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Aldehydes

Aromatic compounds

Ketones

α-Hydroxy aldehydes

45 / 50

Which halogen has the smallest electron affinity?

Br

I

F

Cl

46 / 50

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

7

0

3

4

47 / 50

Mark the correct statement:

CI- and CI are equal in size

Na+ is larger than Na atom

CI- is smaller than CI atom

Na+ is smaller than Na atom

48 / 50

Brine is used for industrial production of

KCL

NaOH

NHO

HCL

49 / 50

On electrolysis of NaOH, hydrogen is liberated

in the electrolyte

At cathode

At anode

none of them

50 / 50

Which of the species is not paramagnetic?

As+

Cl-

Ne²+

Be+

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