Q. Permanent hardness of water is due to the presence of calcium & magnesium

View solution

Q. The temperature in the calcium carbide furnace is __________ °C.

View solution

Q. Vinyl chloride (CH₂ = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of

View solution

Q. Soaps remove dirt by

View solution

Q. Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?

View solution

Q. Chemical name of soda ash is

View solution

Q. A substance produced by a living organism and capable of anti-microbial activity is called a/an

View solution

Q. Deaeration of water in its treatment is necessary, as it

View solution

Q. Hydrochloric acid is also known as

View solution

Q. Aryl benzene sulphonate (ABS) is a

View solution

Q. Adipic acid is an intermediate in the manufacture of

View solution

Q. In multistage equilibrium conversion of SO₂ to SO₃ (2SO₂ + O₂ ↔ 2SO₃), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO₂ to SO₃ can be increased by

View solution

Q. Tall oil obtained as a by-product from the black liquor recovery is

View solution

Q. __________ is a polysacchride.

View solution

Q. Acetone is produced by catalytic dehydrogenation of

View solution

Q. Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?

View solution

Q. Glass is

View solution

Q. Analgesic drugs are

View solution

Q. Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.

View solution

Q. Commonly used glass is known as the __________ glass.

View solution