General knowledge(GK)/General Knowledge(GK) MCQS-General Science-Elements and Metals MCQs :- multiple choice questions and answers. e.g General knowledge(GK) MCQS,General knowledge(GK) Mock Tests , General knowledge(GK) Practice Papers ,General knowledge(GK) Sample Test,General knowledge(GK) Sample questions

Your Session ID :-Guest1128362

Question 1: Brass gets discoloured in air because of the presence of which of the following gases in air?

Oxygen

Hydrogen sulphide

Carbon dioxide

Nitrogen

Total MCQS Questions are 62 in this paper General Knowledge(GK) MCQS-General Science-Elements and Metals
@by R4R.CO.IN Back to General knowledge(GK)
Search
Categories
R4R Team
R4R provides General knowledge(GK) Multiple choice questions and answers (General knowledge(GK) MCQs) .The questions on R4R.co.in website is done by expert team! Mock Tests and Practice Papers for prepare yourself.. Mock Tests, Practice Papers,General Knowledge(GK) MCQS-General Science-Elements and Metals,General knowledge(GK) MCQS,General knowledge(GK) Objetive choice questions and answers,General knowledge(GK) Multiple choice questions and answers,General knowledge(GK) objective, General knowledge(GK) questions , General knowledge(GK) answers,General knowledge(GK) MCQs questions and answers