NCERT Class 11 Chemistry Multiple Choice Questions(MCQs) & Answers
NCERT Class 11 Chemistry
NCERT Class 11 Chemistry Objective type Questions & Answers
53 Which one of the following is the softest?
54 What is a mixture of potassium nitrate , powdered charcoal and sulphur called?
55 Which substance is used to retard the setting action of cement?
56 For Which one of the following is the density maximum ?
57 Which one of the following glasses is used in bullet proof screens?
58 Which one of the following is used as a mordant in dyeing and tanning indusrty?
Answer: magnesium sulphate
59 Periodic table was given by
60 Commercially, sodium bicarbonate is known as