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  • CDS Exam GENERAL KNOWLEDGE Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of GENERAL KNOWLEDGE General Chemistry for CDS Exam student. This free online GENERAL KNOWLEDGE study material for CDS Exam will help students in learning and doing practice on General Chemistry topic of CDS Exam GENERAL KNOWLEDGE. The study material on General Chemistry, help CDS Exam GENERAL KNOWLEDGE students to learn every aspect of General Chemistry and prepare themselves for exams by doing online test exercise for General Chemistry, as their study progresses in class. Kidsfront provide unique pattern of learning GENERAL KNOWLEDGE with free online comprehensive study material and loads of CDS Exam GENERAL KNOWLEDGE General Chemistry exercise prepared by the highly professionals team. Students can understand General Chemistry concept easily and consolidate their learning by doing practice test on General Chemistry regularly till they excel in GENERAL KNOWLEDGE General Chemistry.


General Chemistry
The acid which fails to liberate carbon dioxide from sodium bicarbonate is

a) Formic acid
b) Sulphuric acid
c) Acetic acid
d) Carbonic acid



Answer
Solution
Correct Answer Is : Carbonic acid
Solution Is : Since all three option reacts with sodium bicarbonate to given Co? expect carbonic acid.
Oxide of sulphur present in the atmosphere are washed down by rains to cause

a) Eutrophication in lakes
b) Depletion of fossil fuel reserves
c) Lowering of PH of soil
d) Industrial smog formation



Answer
Solution
Correct Answer Is : Industrial smog formation
Solution Is : Oxide of sulphur present in the atmosphere are washed down by rains to cause industrial smog formation.
Chemical composition of heavy water is

a) D2O
b) H2O2
c) HDO
d) H2O



Answer
Solution
Correct Answer Is : D2O
Solution Is : Heavy water or deuterium oxide is a form of water that contains a larger than normal amount of hydrogen isotope.
Q.Which one of the following is used in making pencils?

a) Black ash
b) Graphite
c) Charcoal
d) Bone black



Answer
Solution
Correct Answer Is : Graphite
Solution Is : Graphite is used in making pencils
Water is an excellent solvent because its molecules are

a) Light weight
b) Neutral
c) Highly polar
d) Non polar



Answer
Solution
Correct Answer Is : Highly polar
Solution Is : Water is an excellent solvent because its molecules are highly polar
Soda ash is the name for

a) Sodium bicarbonate
b) Hydrated sodium carbonate
c) Sodium hydroxide
d) Anhydrous sodium carbonate



Answer
Solution
Correct Answer Is : Sodium bicarbonate
Solution Is : Soda ash is the name for Sodium bicarbonate
Yeasts bring about fermentation by the action of a complex enzyme known as

a) Peroxidase
b) Zymase
c) Invertase
d) Catalase



Answer
Solution
Correct Answer Is : Zymase
Solution Is : Zymase is an enzyme complex that catalyses the fermentation of sugar in to ethanol carbon dioxide. It naturally occurs in years.
The purity of 14 carat gold is

a) 14.6 Per cent
b) 30 Per cent
c) 58.4 Per cent
d) 75.5 Per cent



Answer
Solution
Correct Answer Is : 58.4 Per cent
Solution Is : The purity of 14 carat gold is 58.4 Per cent.
The compound which contains both ionic and covalent bounds is

a) KCN
b) CO
c) CH4
d) H2



Answer
Solution
Correct Answer Is : KCN
Solution Is : The compound which contains both ionic and covalent bounds is KCN.
Which of the following is not a Carboxylic acid?

a) Picric acid
b) Tartaric Acid
c) Formic acid
d) Citric acid



Answer
Solution
Correct Answer Is : Picric acid
Solution Is : Picric acid is not a Carboxylic acid.
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