Chemistry Ch 15 Class 12 Common Chemical Industries In Pakistan

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

UHS 2015
Chemistry
Industrial Chemistry
Elimination Tool:

1/35

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

2/35

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

3/35

Fractions of crude petroleum can be obtained by using ___________.

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

4/35

The temperature zones In rotary kilns are:

5/35

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

NTS 2010
Chemistry
Chemistry of Life
Elimination Tool:

6/35

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

7/35

Enzymes that are functioning within the cell are called:

NUMS 2016
Chemistry
Chemistry of Life
Elimination Tool:

8/35

What is the catalyst used in the Haber process?

H₂ + N₂ ⟶ NH₃

PMC 2021 Tested
Chemistry
Industrial Chemistry
Elimination Tool:

9/35

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

UHS 2016
Chemistry
Industrial Chemistry
Elimination Tool:

10/35

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

11/35

Genetic mutations occur in:

NUMS 2016
Chemistry
Chemistry of Life
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12/35

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

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

13/35

The crude petroleum is separated in fraction by:

PMC Practice 4
Chemistry
Industrial Chemistry
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14/35

1 calorie = ______ Joules.

NTS 2012
Chemistry
Chemistry of Life
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15/35

In Paper industry, sodium sulphite is buffered with

16/35

Which of the following is a Marco-nutrient

17/35

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

18/35

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:

19/35

Identify the pair of rnicronutrients:

20/35

Aluminium nitrate is not used for ai

21/35

cr. be used as a liquid fertilizer?

22/35

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

23/35

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

PMC Practice 3
Chemistry
Industrial Chemistry
Elimination Tool:

24/35

Which of the following is not a macronutrient?

25/35

Percentage of nitrogen in urea is:

26/35

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

NTS 2012
Chemistry
Chemistry of Life
Elimination Tool:

27/35

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

UHS 2015
Chemistry
Industrial Chemistry
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28/35

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

29/35

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

UHS 2011
Chemistry
Industrial Chemistry
Elimination Tool:

30/35

Rayon is ____?

PMC Practice 10
Chemistry
Industrial Chemistry
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31/35

Ammonium nitrate contain nitrogen

32/35

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

UHS 2014
Chemistry
Industrial Chemistry
Elimination Tool:

33/35

Which in not woody raw material

34/35

What is used in cement manufacture?

35/35

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