Chemical Process MCQs

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1.Identify the incorrect statement from the following:

High early strength cement is produced using raw materials with a high silica to lime ratio.Gypsum is added to cement to control its initial setting time.Silicate cement refers to acid-resistant types of cement.Tricalcium silicate is the primary constituent of grey Portland cement.

2.Identify the incorrect statement from the following:

DDT is produced by condensing chlorobenzene with chloral at 30°C in the presence of oleum.Chloral is prepared through the chlorination of ethanol.Insecticides that affect insects via their respiratory system are known as fumigants.Benzene hexachloride functions as a contact insecticide.

3.Which of the following statements is accurate?

Hydrogenation transforms a fat into an oil.Fats and oils have identical physical characteristics.Except for coconut oil, all vegetable oils have fatty acids with more than sixteen carbon atoms.Vegetable oils are categorized as drying, semi-drying, or non-drying based on their fatty acid composition.

4.Identify the incorrect statement from the following:

The eosin content in tallow soap is around 40-50%, which accelerates foam formation, softens the soap, and enhances cleaning efficiency.Soap powder is produced by combining soap with hydrated sodium carbonate.Detergents behave differently than soaps when used in hard water conditions.Tarnish inhibitors like Benzotriazole are incorporated into soap to help remove stains such as those from tea and blood.

5.What is the approximate percentage of sucrose found in cane sugar?

50%70%95%80%

6.What is the primary purpose of using hydrated lime in the process of water treatment?

It is applied before filtration to decrease the bacterial contamination on filters.It is used after filtration to prevent water corrosion caused by oxygen and carbon dioxide.It serves to regulate the pH level of the water.All of the above: A, B, and C.None of the above.

Chemical Process MCQs

About this subject

1.Identify the incorrect statement from the following:

2.Identify the incorrect statement from the following:

3.Which of the following statements is accurate?

4.Identify the incorrect statement from the following:

5.What is the approximate percentage of sucrose found in cane sugar?

6.What is the primary purpose of using hydrated lime in the process of water treatment?

7.What is the chemical name of a Grignard reagent?

8.Which product is synthesized using acetylene and hydrochloric acid as the primary raw materials?

9.What class of chemicals do Parathion and Malathion belong to?

10.Which substance is not commercially extracted from seawater on a large scale?

11.From which of the following substances is glycerine derived?

12.What causes the permanent hardness in water due to calcium and magnesium compounds?

13.Why is the removal of dissolved gases from water important during its treatment process?

14.What effect does the presence of dissolved oxygen in boiler water have?

15.What is the product formed when ethylene glycol reacts with dimethyl terephthalate (DMT)?

16.Why is Pyrex glass resistant to sudden changes in temperature?

17.Which compound is naturally found in coffee?

18.Compared to nylon fibers, Dacron (also known as Terylene) fibers exhibit which characteristic?

19.Which of the following methods is rarely used to produce common salt from brine?

20.What is the approximate flash point temperature of the majority of vegetable oils in degrees Celsius?

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