Chemistry GK Questions and Answers for Competitive Exams is a concise and comprehensive article designed to help aspirants prepare for various competitive examinations that include a chemistry section. Covering a wide range of topics, this article serves as a valuable resource for students, job seekers, and anyone seeking to test and enhance their knowledge of chemistry.
The article Chemistry GK Questions and Answers features a curated selection of general knowledge (GK) questions on fundamental principles, theories, elements, compounds, reactions, and applications of chemistry. Each question is followed by a clear and concise answer, ensuring that readers not only gauge their knowledge but also understand the underlying concepts.
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Q : In what form is alum used ?
(A) Painkiller
(B) Fertilizer
(C) antiseptic
(D) water purifier
Which of the following is an oxidising agent ?
(A) KMnO4
(B) K2 Cr2 07
(C) HNO3
(D) All of the above
Identify the man - made element
(A) Carbon
(B) Gold
(C) californium
(D) calcium
What color does blue litmus paper turn into?
(A) White
(B) Red
(C) Black
(D) Violet
What is the hearing capacity of a human being?
(A) 20 Hz to 2000 Hz
(B) 20 Hz to 20000 Hz
(C) More than 20000 Hz
(D) 200 Hz to 20000 Hz
Which of the following compound contains only Carbon and Hydrogen atoms in their formation?
(A) Chloroform
(B) Teflon
(C) Ethanol
(D) Benzene
Limestone on decomposition gives_______and carbon dioxide.
(A) Calcium hydrogen carbonate
(B) Calcium carbonate
(C) Calcium hydroxide
(D) Calcium oxide
What are Rubies and Sapphires chemically known as ?
(A) Silicon dioxide
(B) Aluminum oxide
(C) Lead tetroxide
(D) Boron nitride
Chemically vermillion is :
(A) Calcium carbonate
(B) Potassium sulphide
(C) Mercuric sulphide
(D) Sodium chloride
What is the chemical formula of sodium carbonate ?
(A) Na2CO3
(B) NaCO3
(C) Na1CO2
(D) Na1CO2
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