Chemistry In Everyday Life - Study Mode

[#1] Soap is prepared by boiling caustic soda with
Correct Answer

(D) fats

[#2] Innermost region of flame having the temperature
Correct Answer

(B) lowest

[#3] Which one of the following types of glasses is used for making optical instruments?
Correct Answer

(C) Hard glass

[#4] Which one among the following is the chemical formula of gypsum, which is an ingredient of cement?
Correct Answer

(B) $$CaS{O_4} cdot 2{H_2}O$$

[#5] For wheat cultivation which fertilizer is used?
Correct Answer

(A) Nitrogen