Miscellaneous And Useful Chemical Compounds (Part-V)

21. Who discovered Fullerene (an allotrope of Carbon)? [S.S.C. Online CHSL (T-I) 29.01.2017 (Shift-II)]

(a) K Scheele
(b) Richard Smalley
(c) Faraday
(d) Heisenberg

Correct Answer: (b) Richard Smalley

Solution:Fullerene is a very useful allotrope of carbon. In this complex form of carbon, the carbon atoms join each other in a hexagonal or pentagonal form to form a cage structure. It was created in the year 1985 by Richard Smalley and his colleagues.

22. Who discovered the catalyst? [S.S.C. Online CHSL (T-I) 31.01.2017 (Shift-III)]

(a) Mascurein
(b) Berzelius
(c) Hook
(d) Garner

Correct Answer: (b) Berzelius

Solution:The substances that increase or decrease the rate of reaction when added to a chemical reaction are called catalysts. Catalyst does not participate in the reaction, only affects the rate of action. It was discovered by Berzelius in 1835.

23. Who discovered benzene? [S.S.C. Online CHSL (T-I) 16.01.2017 (Shift-I)]

(a) Hal Anger
(b) Michael Faraday
(c) Bruce Ames
(d) Nicolas Appert

Correct Answer: (b) Michael Faraday

Solution:Benzene is a hydrocarbon with the molecular formula C6H6. The benzene molecule is made up of 6 carbon atoms. It was discovered by Michael Faraday in 1825. It is a colorless, highly flammable liquid with a foul odor.

24. Who discovered Oxygen? [S.S.C. Online CHSL (T-I) 19.01.2017 (Shift-III)]

(a) Carl Scheele
(b) Hooke
(c) Heisenberg
(d) Williams

Correct Answer: (a) Carl Scheele

Solution:Oxygen is a colorless, tasteless, and odorless gas. In its discovery, realization, or preliminary study, J. Priestley and C.W. Scheele has done a great job. It is a chemical element. In 1772, Carl Scheele prepared oxygen gas by heating potassium nitrate, which has atomic number 8 and atomic weight 16.

25. Who discovered Nitrogen? [S.S.C. Online CHSL (T-I) 9.01.2017 (Shift-III)]

(a) Faraday
(b) Heisenberg
(c) Hooke
(d) Rutherford

Correct Answer: (d) Rutherford

Solution:Nitrogen was discovered by Daniel Rutherford. It is the 5th most abundant element in the universe and 78% of the Earth's atmosphere consists of nitrogen.

26. ______ is used for making vinegar. [S.S.C. Online CHSL (T-I) 15.01.2017 (Shift-I)]

(a) Tartaric acid
(b) Malic acid
(c) Oxalic acid
(d) Acetic acid

Correct Answer: (d) Acetic acid

Solution:

The main acid found in vinegar is ethanoic acid. Its chemical name is acetic acid, which is used for food processing purposes. Acetic acid ( $CH_3COOH$ ) is an organic acid with a pungent odor. Vinegar can be identified only by this pungent smell of acetic acid.

27. What is the dominant chemical present in vinegar? [S.S.C. Online Graduate Level (T-I) 10.06.2019 (Shift-I)]

(a) Formic Acid
(b) Malic Acid
(c) Sulphuric Acid
(d) Ethanoic Acid

Correct Answer: (d) Ethanoic Acid

Solution:

The main acid found in vinegar is ethanoic acid. Its chemical name is acetic acid, which is used for food processing purposes. Acetic acid ( $CH_3COOH$ ) is an organic acid with a pungent odor. Vinegar can be identified only by this pungent smell of acetic acid.

28. Chemical name of vinegar is : [S.S.C. Online Graduate Level (T-I) 1.09.2016 (Shift-II) S.S.C. Online C.P.O.S.I. (T-I) 5.07.2017 (Shift-I)]

(a) Acetone
(b) Acetic acid
(c) Formaldehyde
(d) Ethanol

Correct Answer: (b) Acetic acid

Solution:The main acid found in vinegar is ethanoic acid. Its chemical name is acetic acid, which is used for food processing purposes. Acetic acid (

CH_3COOH

) is an organic acid with a pungent odor. Vinegar can be identified only by this pungent smell of acetic acid.

29. Which acid does vinegar contain? [S.S.C. Online MTS (T-I) 22.10.2021 (Shift-II)]

(a) Citric acid
(b) Nitric acid
(c) Tartaric acid
(d) Acetic acid

Correct Answer: (d) Acetic acid

Solution:The main acid found in vinegar is ethanoic acid. Its chemical name is acetic acid, which is used for food processing purposes. Acetic acid (

CH_3COOH

) is an organic acid with a pungent odor. Vinegar can be identified only by this pungent smell of acetic acid.

30. Acetic acid is called [S.S.C. Online CHSL (T-I) 19.01.2017 (Shift-II)]

(a) caustic soda
(b) Spirit
(c) Baking soda
(d) Vinegar

Correct Answer: (d) Vinegar

Solution:The main acid found in vinegar is ethanoic acid. Its chemical name is acetic acid, which is used for food processing purposes. Acetic acid (

CH_3COOH

$C H_{3} COO H$ ) is an organic acid with a pungent odor. Vinegar can be identified only by this pungent smell of acetic acid.

Miscellaneous And Useful Chemical Compounds (Part-V)

21. Who discovered Fullerene (an allotrope of Carbon)? [S.S.C. Online CHSL (T-I) 29.01.2017 (Shift-II)]

22. Who discovered the catalyst? [S.S.C. Online CHSL (T-I) 31.01.2017 (Shift-III)]

23. Who discovered benzene? [S.S.C. Online CHSL (T-I) 16.01.2017 (Shift-I)]

24. Who discovered Oxygen? [S.S.C. Online CHSL (T-I) 19.01.2017 (Shift-III)]

25. Who discovered Nitrogen? [S.S.C. Online CHSL (T-I) 9.01.2017 (Shift-III)]

26. ______ is used for making vinegar. [S.S.C. Online CHSL (T-I) 15.01.2017 (Shift-I)]

27. What is the dominant chemical present in vinegar? [S.S.C. Online Graduate Level (T-I) 10.06.2019 (Shift-I)]

28. Chemical name of vinegar is : [S.S.C. Online Graduate Level (T-I) 1.09.2016 (Shift-II) S.S.C. Online C.P.O.S.I. (T-I) 5.07.2017 (Shift-I)]

29. Which acid does vinegar contain? [S.S.C. Online MTS (T-I) 22.10.2021 (Shift-II)]

30. Acetic acid is called [S.S.C. Online CHSL (T-I) 19.01.2017 (Shift-II)]

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