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

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

7.32
1.25
2.43
0

2 / 50

The mass of one mole of electron is

1.008 mg
0.54 mg
0.184 mg
0.054 mg

3 / 50

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

3
4
7
0

4 / 50

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

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

5 / 50

which of the following element have unpaired electrons in s subshell

Mn
Co
Fe
Cr

6 / 50

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

Ni
Pd
Sn
All of the above

7 / 50

Brine is used for industrial production of

HCL
NaOH
KCL
NHO

8 / 50

Which of the following is soft Coal?

Anthracite
Lignite
Bituminous
Peat

9 / 50

Which carbohydrate is the least sweet?

Starch
Sucrose
Glucose
Fructose

10 / 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
increases four times
decrease two times
increases two times

11 / 50

Structural formula of cycloalkane is.....

CnHn
Cn2H5n
CnH2n
C8n6Hn8

12 / 50

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

EQUAL
Increase 4 time
NOT EQUAL
increase 2 time

13 / 50

Which of the following is more acidic in nature?

Phenol
Benzene
Cresol
p-nitrobenzene

14 / 50

Number of free electrons in nickel Ni2+

8
3
8
2

15 / 50

Industrial waste water contains:

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

16 / 50

How many calories are in fat……………..?

8
9
6
4

17 / 50

__________is study about energy of a chemical system

thermochemistry
Organichemistry
Biochemistry
None

18 / 50

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

820°C
520°C
690°C
620°C

19 / 50

Presence of heavy metals in water causes

Cancer
Mental retardation
Nervous disorder
All of these

20 / 50

On electrolysis of NaOH, hydrogen is liberated

At anode
none of them
At cathode
in the electrolyte

21 / 50

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

5.5
1
0.5
5

22 / 50

MASS of sulpher is.......

23g
72g
32g
92g

23 / 50

The whole universe is made up of almostHydrogen?

40%
70%
90%
60%

24 / 50

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

Ethanol
Gasoline
Glycerol
Propanoic acid

25 / 50

Dipole moment of CO2 is......

0
4
7
2

26 / 50

Ionization energy is lowest for

Alkaline earth metals
Inert gases
Alkali metals
Halogens

27 / 50

Benzene is good solvent for:

Fats
Iodine
Resins
All

28 / 50

Find PH of 0.001m of HCL:

4
3
2
8

29 / 50

Neutron was discovered by Chadwick in:

1932
1935
1987
1923

30 / 50

Which organic compound does not undergo the Cannizzaro reaction?

Ketones
Aldehydes
Aromatic compounds
α-Hydroxy aldehydes

31 / 50

Which organic compound does not undergo the Cannizzaro reaction?

α-Hydroxy aldehydes
Ketones
Aldehydes
Aromatic compounds

32 / 50

Mark the correct statement:

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

33 / 50

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

60
30
20
10

34 / 50

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

84.87%.
74.87%.
54.87%
77.87%.

35 / 50

Carbon atoms of diamond are:

sp1 hybridized
sp2 hybridized
sp3 hybridized
Not hybridized

36 / 50

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

0
6
4
21

37 / 50

The molarity of CH4 is......

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

38 / 50

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

Typical elements
Transition elements
Rare earth elements
Inert elements

39 / 50

Valency of carbon is:

6
2
8
4

40 / 50

Which of the following elements has the highest electronegativity?

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

41 / 50

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

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

42 / 50

The ionization energy of Hydrogen is ?

17.56ev
13.6ev
10.54ev
12.54ev

43 / 50

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

Strong acid
Strong base
Neutral substance
Weak acid

44 / 50

Oxidation state of sodium

+1
+8
+5
+4

45 / 50

Which of the following enzymes converts maltose to glucose?

Diastase
Zymase
Lactase
Maltase

46 / 50

Which of the species is not paramagnetic?

As+
Cl-
Ne²+
Be+

47 / 50

Which one of the following is an incorrect statement?

he ionization potential of beryllium is greater than that of boron
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

48 / 50

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

8
2
4
3

49 / 50

How many structural isomers are present for trichloro propane C3H5Cl3.

0
3
5
8

50 / 50

Which halogen has the smallest electron affinity?

F
Cl
Br
I

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