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 organic compound does not undergo the Cannizzaro reaction?

α-Hydroxy aldehydes
Aldehydes
Ketones
Aromatic compounds

2 / 50

Brine is used for industrial production of

NaOH
NHO
KCL
HCL

3 / 50

How many structural isomers are present for trichloro propane C3H5Cl3.

0
8
5
3

4 / 50

The ionization energy of Hydrogen is ?

12.54ev
10.54ev
17.56ev
13.6ev

5 / 50

__________is study about energy of a chemical system

Biochemistry
thermochemistry
None
Organichemistry

6 / 50

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

Increase 4 time
increase 2 time
EQUAL
NOT EQUAL

7 / 50

Industrial waste water contains:

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

8 / 50

Which of the following is soft Coal?

Peat
Bituminous
Anthracite
Lignite

9 / 50

On electrolysis of NaOH, hydrogen is liberated

At cathode
At anode
none of them
in the electrolyte

10 / 50

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

620°C
520°C
690°C
820°C

11 / 50

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

6
4
21
0

12 / 50

Benzene is good solvent for:

Fats
All
Resins
Iodine

13 / 50

Number of free electrons in nickel Ni2+

2
8
3
8

14 / 50

Which of the following enzymes converts maltose to glucose?

Maltase
Zymase
Diastase
Lactase

15 / 50

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

Strong base
Strong acid
Neutral substance
Weak acid

16 / 50

How many calories are in fat……………..?

8
4
6
9

17 / 50

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

Inert elements
Rare earth elements
Typical elements
Transition elements

18 / 50

The mass of one mole of electron is

0.054 mg
1.008 mg
0.54 mg
0.184 mg

19 / 50

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

Ni
Pd
Sn
All of the above

20 / 50

Structural formula of cycloalkane is.....

CnHn
CnH2n
C8n6Hn8
Cn2H5n

21 / 50

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

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

22 / 50

Which of the species is not paramagnetic?

Be+
As+
Ne²+
Cl-

23 / 50

Presence of heavy metals in water causes

Mental retardation
Cancer
Nervous disorder
All of these

24 / 50

The whole universe is made up of almostHydrogen?

60%
40%
90%
70%

25 / 50

Ionization energy is lowest for

Alkali metals
Halogens
Alkaline earth metals
Inert gases

26 / 50

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

5
5.5
1
0.5

27 / 50

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

20
30
10
60

28 / 50

Which of the following is more acidic in nature?

Benzene
Cresol
Phenol
p-nitrobenzene

29 / 50

Which of the following elements has the highest electronegativity?

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

30 / 50

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

Propanoic acid
Gasoline
Glycerol
Ethanol

31 / 50

Dipole moment of CO2 is......

4
7
2
0

32 / 50

Oxidation state of sodium

+8
+1
+4
+5

33 / 50

Valency of carbon is:

4
8
2
6

34 / 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

35 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Aldehydes
α-Hydroxy aldehydes
Aromatic compounds
Ketones

36 / 50

Which one of the following is an incorrect statement?

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
he ionization potential of beryllium is greater than that of boron

37 / 50

MASS of sulpher is.......

92g
32g
72g
23g

38 / 50

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

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

39 / 50

Neutron was discovered by Chadwick in:

1987
1932
1923
1935

40 / 50

Which halogen has the smallest electron affinity?

Br
F
Cl
I

41 / 50

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

84.87%.
74.87%.
54.87%
77.87%.

42 / 50

The molarity of CH4 is......

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

43 / 50

Carbon atoms of diamond are:

Not hybridized
sp3 hybridized
sp1 hybridized
sp2 hybridized

44 / 50

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

4
7
0
3

45 / 50

which of the following element have unpaired electrons in s subshell

Cr
Fe
Mn
Co

46 / 50

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

2.43
1.25
0
7.32

47 / 50

Find PH of 0.001m of HCL:

3
2
8
4

48 / 50

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

4
2
8
3

49 / 50

Mark the correct statement:

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

50 / 50

Which carbohydrate is the least sweet?

Fructose
Starch
Glucose
Sucrose

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