Chemistry MCQs for PPSC FPSC KKPSC BPSC SPSC NTS Test No. 59

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There will be 25 multiple choice question in the test.
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Test Instructions:-
Test Name Lecturer Chemistry
Subject Chemistry Test 5
Test Type MCQs
Total Questions 25
Total Time 20 Minutes
Total Marks 100
0%

You have 20 minutes to pass to the quiz.


Lecturer of Chemistry Online Test No. 59

1 / 25

Which has maximum number of molecules?

A). 1.7 g NH3

B). 2 g He

C). 4.6 g NO2

D).3.2 g SO2

2 / 25

Volume of a gas at NTP is 1.12 × 10-7 cc. The number of molecules in it is:

A). 3.01 × 1012

B). 3.01 × 1018

C). 3.01 × 1024

D). 3.01 × 1030

3 / 25

One mole of fluorine is reacted with two mole of hot and concentrated KOH. The products formed are KF, H2O and O2. The molar ratio of KF, H2O and O2 respectively is:

4 / 25

Maximum number of molecules will be in:

A). 1 g of H2

B).  10 g of H2

C). 22 g of O2

D). 44 g of CO2

5 / 25

The oxide of an element contains 67.67% of oxygen and the vapour density of its volatile chloride is 79. Equivalent weight of the element is:

6 / 25

How many grams of CH3OH would have to be added to water to prepare 150 mL of a solution that is 2.0 M
CH3OH?

A). 9.6 g

B). 906 g

C). 4.3 × 102 g

D). 9.6 × 103 g

 

7 / 25

Two grams of sulphur is completely burnt in oxygen to form SO2, In this reaction, what is the volume (in litres) of oxygen consumed at STP? (At. wt. of sulphur and oxygen are 32 and 16, respectively):

8 / 25

800 g of a 40% solution by weight was cooled. 100 g of solute precipitated. The percentage composition of
remaining solution is:

9 / 25

‘X’ litres of carbon monoxide is present at STP. It is completely oxidized to CO2. The volume of CO2 formed is 11.207 litres at STP. What is the value of ‘X’ in litres?

10 / 25

The equivalent weight of phosphoric acid (H3PO4) in

NaOH + H3PO4..........>NaH2PO4 + H2O is

11 / 25

The molar concentration of 20 g of NaOH present in 5 litre of solution is:

12 / 25

What is the volume (in litre) of oxygen required at STP to completely convert 1.5 moles of sulphur to sulphur dioxide?

13 / 25

The normality of H2SO4 having 50 milliequivalent in 2 L solution is:

14 / 25

What is the volume (in litres) of oxygen at STP required for complete combustion of 32 g of CH4?
(mol. wt. of CH4 = 16):

15 / 25

In acidic medium, dichromate ion oxidize ferrous ion to ferric ion. If the gram molecular weight of potassium dichromate is 294 g, its equivalent weight is:

16 / 25

1021 molecules are removed from 200 mg of CO2. The moles of CO2 left are:

A). 2.88 × 10-3

B). 28.8 × 10-3

C). 288 × 10-3

D). 28.8 × 103

17 / 25

How many grams of KCl must be added to 75 g of water to produce a solution with a molality of 2.25?

18 / 25

The total number of protons in 10 g of calcium carbonate is (N0 = 6.023 × 1023):

A). 3.01 × 1024

B). 4.06 × 1024

C). 30.1 × 1024

D). 3.01 × 1023

19 / 25

The normality of orthophosphoric acid having purity of 70% be weight and specific gravity 1.54 is:

20 / 25

2.76 g of silver carbonate (At. mass of Ag = 108) on being heated strongly yields a reduce weight:

21 / 25

0.25 mol of P4 molecules contains......................atoms:

A). 1.764 × 1023

B). 6.02 × 1019

C). 6.023 × 1023

D). 8.086 × 1023

22 / 25

How many water molecules are there in one drop of water (volume = 0.0018 mL) at room temperature?

A). 4.86 × 1017

B). 6.023 × 1024

C). 2.584 × 1019

D). 6.023 × 1019

23 / 25

The volume of 1.0 g of hydrogen in litres at NTP is:

24 / 25

4 g caustic soda is dissolved in 100 cc of solution. The normality of solution is:

25 / 25

120 g of urea is present in 5 litre of solution. The active mass of urea is:

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