Q. Magnesium and calcium __________ cause temporary hardness of water.

View solution

Q. Which form of sulphur is the most stable at room temperature ?

View solution

Q. Vegetable oils and fats basically differ in their

View solution

Q. Average sulphur content in Indian pyrites is about __________ percent.

View solution

Q. Oil is a/an

View solution

Q. Which of the following is a constituent of coffee ?

View solution

Q. Blue vitriol is chemically

View solution

Q. Trinitro-toluene (TNT) is

View solution

Q. Thorium is mainly used

View solution

Q. During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

View solution

Q. Good quality of edible salt is obtained from brine by the process of

View solution

Q. Which of the following is the main constituent of the mother liquor produced in salt industry ?

View solution

Q. Silicon carbide is a/an

View solution

Q. Oxygen is produced by fractionation of air using __________ process.

View solution

Q. Trinitrotoluene (TNT), an explosive, is made by the nitration of

View solution

Q. Which of the following is used as a coagulant in treating turbid water ?

View solution

Q. Nicotine is

View solution

Q. Separation of fresh water from sea water can be done by the __________ operation.

View solution

Q. Na₂CO₃.10H₂O is called

View solution

Q. Reaction of an alcohol with organic acid is called the __________ reaction.

View solution