Chemistry Common Chemical Industries In Pakistan MCQs Chapter 15 Class 12

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Created on February 10, 2022 By Ali Durrani

Chemistry Ch 15 Class 12 COMMON CHEMICAL INDUSTRIES IN PAKISTAN

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1 / 35

In Paper industry, sodium sulphite is buffered with

Sodium carbonate

Sodium hydroxide

Sodium acetate

Both a and b

2 / 35

______ is needed in thyroxine, the hormone of thyroid gland.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) Mg2+

B) K+

C) Ca2+

D) Iodine

3 / 35

The zone where moisture is removed and clay is broken down into Al203, Si02, Fe203 is

Burning zone

Cooling zone

Drying zone

Decomposition zone

4 / 35

When hexane dioic acid is heated with hexamethylene diamine, the compound formed is:

UHS 2011
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polypeptide

B) Addition polymer

C) Ester

D) Nylon 6,6

5 / 35

Ammonium nitrate contain nitrogen

6 / 35

Rayon is ____?

PMC Practice 10
Chemistry
Industrial Chemistry
Elimination Tool:

A) Acetyl chloride

B) Alkene

C) Alkyne

D) Acetic acid

7 / 35

Which one of the following polymer is called as Nylon 6,6?

UHS 2016
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyester

B) Polyvinyl chloride

C) Polyamide

D) Polyvinyl acetate

8 / 35

Which of the following is the most widely used fertilizer in Pakistan?

Ammonium Nitrate

Ammonia

Calcium Nitrate

Urea

9 / 35

Which one of the following was used as one of the earliest antiseptic and disinfectants?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Phenol

B) Ether

C) Ethanol

D) Methanol

10 / 35

“Zymase”- a group of 14 enzymes, used in the fermentation of starch, is present in:

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

A) Bacteria

B) Yeast

C) Fungi

D) Algae

11 / 35

What is used in cement manufacture?

Limestone

Starch

Potassium Oxide

Both a and b

12 / 35

Which of the following is a Marco-nutrient

Boron

Copper

Iron

Nitrogen

13 / 35

Which one of the following is an example of a condensation polymer?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyvinyl Chloride

B) Polystyrene

C) Polyethene

D) Polyamide

14 / 35

Enzymes that are functioning within the cell are called:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) Endoenzymes

B) Exoenzymes

C) Holoenzymes

D) Both A & C

15 / 35

What is the nature of “hydrated tricalcium aluminate” (3 Ca. Al203. 6 H20) in the setting of cement?

) Hardened mass

Hardened Gel

Colloidal Gel

Liquid

16 / 35

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

A) Destructive distillation

B) Fractional distillation

C) Vacuum distillation

D) Distillation

17 / 35

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
Elimination Tool:

A) Filtration

B) Fractional distillation

C) Steam distillation

D) Fractional sublimation

18 / 35

Which one of the following is an example of a co-polymer?

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Polyamide

B) Polystyrene

C) Polyvinyl acetate

D) Polyvinyl chloride

19 / 35

Identify the pair of rnicronutrients:

B, I

N, Cu

C, CI

Zn, H

20 / 35

cr. be used as a liquid fertilizer?

Ammonia

Potassium phosphate

Diammonium phosphate

urea

21 / 35

1 calorie = ______ Joules.

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

A) 200 Joules

B) 2000 Joules

C) 4.184 Joules

D) 4180 Joules

22 / 35

Which of the following is not a macronutrient?

23 / 35

Which in not woody raw material

Poplar

) Hard wood

Fir

Rag

24 / 35

Percentage of nitrogen in urea is:

25 / 35

How many grams of micronutrients are needed by 1 acre of land?

100-1000

200-500

6 to 200

20 to 300

26 / 35

Among the most common disaccharides, one of the following is present in the milk?

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

A) Sucrose

B) Maltose

C) Fructose

D) Lactose

27 / 35

1500•degree Celsius furnace temperature Is maintained at which zone?

Heating

Burning

Decomposition

Roth b and c

28 / 35

Burning of which one of the following waste is considered as useful industrial fuel or to produce electricity

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

A) Metals

B) Grass

C) Paper

D) Plastic

29 / 35

Which Organic acid is used in pulping of wood for paper?

Formic Acid

Acetic Acid

Propanoic Acid

Stearic Acid

30 / 35

Aluminium nitrate is not used for ai

Corn

Cotton

Rice

Wheat

31 / 35

The macronutrients for healthy plant growth are required in per acre.

5g — 200 g

5kg — 200 kg

5g — 2000kg

None of these

32 / 35

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

A) RNA

B) Protein

C) DNA

D) All of the above

33 / 35

In the production of wrought iron Mg, Si, and P are removed in the form of:

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

A) Oxides

B) Silicates

C) Slag

D) Carbonates

34 / 35

What is the catalyst used in the Haber process?

H₂ + N₂ ⟶ NH₃

PMC 2021 Tested
Chemistry
Industrial Chemistry
Elimination Tool:

A) Chlorine

B) Iron

C) Magnesium

D) Calcium

35 / 35

The temperature zones In rotary kilns are:

None of these

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