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 carbohydrate is the least sweet?

Glucose
Sucrose
Fructose
Starch

2 / 50

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

Bleach (Sodium hypochlorite)
Vinegar (Acetic acid)
Sulphur
Phenols

3 / 50

Number of free electrons in nickel Ni2+

2
8
3
8

4 / 50

Mark the correct statement:

CI- is smaller than CI atom
Na+ is smaller than Na atom
Na+ is larger than Na atom
CI- and CI are equal in size

5 / 50

MASS of sulpher is.......

32g
92g
72g
23g

6 / 50

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

All of the above
Sn
Pd
Ni

7 / 50

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

60
30
10
20

8 / 50

Industrial waste water contains:

Pathogens
Occluded & dissolved gases
All of these
Inorganic salts & organic compounds

9 / 50

which of the following element have unpaired electrons in s subshell

Cr
Mn
Co
Fe

10 / 50

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

5.5
1
0.5
5

11 / 50

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

Inert elements
Transition elements
Rare earth elements
Typical elements

12 / 50

Structural formula of cycloalkane is.....

CnHn
Cn2H5n
C8n6Hn8
CnH2n

13 / 50

On electrolysis of NaOH, hydrogen is liberated

none of them
At anode
At cathode
in the electrolyte

14 / 50

The whole universe is made up of almostHydrogen?

40%
60%
90%
70%

15 / 50

The ionization energy of Hydrogen is ?

17.56ev
12.54ev
10.54ev
13.6ev

16 / 50

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

0
2.43
1.25
7.32

17 / 50

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

2
4
8
3

18 / 50

Which halogen has the smallest electron affinity?

F
I
Cl
Br

19 / 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
690°C
620°C

20 / 50

Which of the following is soft Coal?

Peat
Bituminous
Lignite
Anthracite

21 / 50

The molarity of CH4 is......

32.042g/mol
45.042g/mol
65.042g/mol
16.042g/mol

22 / 50

The mass of one mole of electron is

1.008 mg
0.184 mg
0.54 mg
0.054 mg

23 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Ketones
Aldehydes
Aromatic compounds
α-Hydroxy aldehydes

24 / 50

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

0
7
4
3

25 / 50

Ionization energy is lowest for

Alkaline earth metals
Inert gases
Halogens
Alkali metals

26 / 50

How many structural isomers are present for trichloro propane C3H5Cl3.

0
5
3
8

27 / 50

Neutron was discovered by Chadwick in:

1932
1935
1923
1987

28 / 50

Which one of the following is an incorrect statement?

The electron affinity of fluorine is greater than that of chlorine
The electronegativity of fluorine is greater than that of chlorine.
The ionization potential of nitrogen is greater than that of chlorine
he ionization potential of beryllium is greater than that of boron

29 / 50

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

Strong acid
Weak acid
Neutral substance
Strong base

30 / 50

Valency of carbon is:

4
6
8
2

31 / 50

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

increase 2 time
Increase 4 time
EQUAL
NOT EQUAL

32 / 50

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

1:6
1:4
1:8
1:9

33 / 50

Oxidation state of sodium

+5
+4
+1
+8

34 / 50

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

21
6
0
4

35 / 50

Dipole moment of CO2 is......

2
0
4
7

36 / 50

Presence of heavy metals in water causes

Mental retardation
All of these
Cancer
Nervous disorder

37 / 50

__________is study about energy of a chemical system

thermochemistry
None
Biochemistry
Organichemistry

38 / 50

How many calories are in fat……………..?

9
4
8
6

39 / 50

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

increases four times
increases two times
decrease two times
decrease four times

40 / 50

Benzene is good solvent for:

Resins
Iodine
All
Fats

41 / 50

Carbon atoms of diamond are:

sp3 hybridized
sp2 hybridized
Not hybridized
sp1 hybridized

42 / 50

Which of the following is more acidic in nature?

Cresol
p-nitrobenzene
Benzene
Phenol

43 / 50

Which of the species is not paramagnetic?

Ne²+
Be+
Cl-
As+

44 / 50

Find PH of 0.001m of HCL:

3
2
4
8

45 / 50

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

84.87%.
54.87%
74.87%.
77.87%.

46 / 50

Which of the following elements has the highest electronegativity?

Nitrogen (N)
Oxygen (O)
Fluorine (F)
Chlorine (Cl)

47 / 50

Which of the following enzymes converts maltose to glucose?

Diastase
Lactase
Maltase
Zymase

48 / 50

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

Ethanol
Propanoic acid
Glycerol
Gasoline

49 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Aromatic compounds
Ketones
α-Hydroxy aldehydes
Aldehydes

50 / 50

Brine is used for industrial production of

KCL
NaOH
HCL
NHO

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