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Chemistry Miscellaneous Part-2

📆 October 24, 2024

Total Questions: 38

1. Match List-I with List-II and select the correct answer from the code given below the lists: [U.P.P.C.S. (Pre) 2019]

List-IList-II
A. Kevlar1. Explosive
B. Taxol2. Synthetic fiber
C. Zinc Phosphide3. Anticancer drug
D. Nitrocellulose4. Rodenticide

 

Code

A

B

C

D

(a)

2

4

3

1

(b)

2

3

4

1

(c)

4

3

1

2

(d)

3

1

2

4

 

Correct Answer: (b)
Solution:Correct match:
  • Kevlar – Synthetic fiber
  • Taxol – Anticancer drug
  • Zinc Phosphide – Rodenticide
  • Nitrocellulose – Explosive

2. Which one of the following is NOT correctly matched? [U.P.P.C.S. (Pre) 2019]

Correct Answer: (a) Silver bromide – Artificial Photosynthesis
Solution:Silver bromide is used in photography and not in artificial photosynthesis. Other pairs are correctly matched.

3. Match List-I with List-II and select the correct answer using the codes given below: [U.P. Lower Sub. (Mains) 2009]

List-IList-II
A. Silicon CarbidePhotosynthesis
B. Carbon FibreRefrigerator
C. Carbon DioxideArtificial Diamond
D. DichlorodifluoromethaneAircraft

 

Code

A

B

C

D

(a)

4

3

1

2

(b)

3

4

1

2

(c)

2

3

1

4

(d)

3

2

1

4

Correct Answer: (b)
Solution:Silicon Carbide       -  Artificial Diamond

Carbon Fiber          - Aircraft

Carbon dioxide      - Photosynthesis

Dichlorodifluoromethane - Refrigerator

4. Match List-I with List-II and select the correct answer by using the codes given below the lists: [U.P.P.S.C. (GIC) 2010]

 

List-IList-II
A. Iron1. Photography
B. Lead2. Lightning conductor
C. Silver3. Haemoglobin
D. Copper4. Storage battery

 

Code

A

B

C

D

(a)

1

2

3

4

(b)

4

3

2

1

(c)

2

1

4

3

(d)

3

4

1

2

Correct Answer: (d)
Solution:The main attribute common to all lighting rods is that they are all made of conductive materials such as copper and aluminium. Copper and its alloys are the most common materials used in lightning protection in buildings and houses.

Haemoglobin in the blood carries oxygen from the respiratory organs (lungs or gills) to the rest of the body. Its molecule comprises four subunits, each containing an iron atom bound to a haem group.

Lead-acid batteries, also known as lead storage batteries provide high current in short period of time, making them essential for vehicles.

Silver Bromide is used in photography.

5. Match List-I with List-II and select the correct answer by using the codes given below the lists: [U.P.P.C.S. (Pre) 2011]

 

List-IList-II
A. Morphine1. Antiseptic
B. Sodium2. Alloy
C. Boric Acid3. Analgesic
D. German Silver4. Kerosene oil

 

Code

A

B

C

D

(a)

4

3

1

2

(b)

2

4

3

1

(c)

3

1

4

2

(d)

3

4

1

2

Correct Answer: (d)
Solution:Morphine (INN) is an opioid analgesic drug. It is the main psychoactive chemical present in opium.

Sodium is kept in kerosene oil because it is extremely reactive. It is kept under the oil because it might react with air.

Boric acid is a weak monobasic Lewis acid of boron often used as an antiseptic, insecticide, flame retardant etc.

German silver is a copper alloy with nickel and often zinc. The usual formulation is 60% copper, 20% nickel and 20% zinc. Nickel silver is named for its silvery appearance, but it contains no elemental silver unless plated.

6. Match List-I with List-II and select the correct answer by using the codes given below the lists: [60th to 62nd B.P.S.C. (Pre) 2016]

List-IList-II
A. Skin Cancer1. Chlorofluorocarbons
B. Noise Pollution2. Ultraviolet light
C. Global Warming3. Decibel
D. Ozone Hole4. Carbon dioxide

 

 

Code

A

B

C

D

(a)

1

2

3

4

(b)

2

3

4

1

(c)

2

3

1

4

(d)

4

3

2

1
Correct Answer: (b)
Solution:Correct match:
  • Skin Cancer – Ultraviolet Light: Primarily caused by excessive exposure to ultraviolet (UV) light from the sun.
  • Noise Pollution – Decibel: Measured in decibels (dB).
  • Global Warming – Carbon dioxide: A major contributor is the increase in greenhouse gases, particularly carbon dioxide ().
  • Ozone Hole – Chlorofluorocarbon: Caused by the depletion of the ozone layer, largely due to chemicals like chlorofluorocarbons (CFCs).

7. Which one of the following is called the 'metal of future'? [U.P.P.S.C. (GIC) 2010]

Correct Answer: (c) Titanium
Solution:Titanium is light, strong, corrosion-resistant, and is used in aerospace, sports goods, and surgical procedures. It is known as the 'metal of the future.'

8. Which one of the following is NOT correctly matched? [U.P.P.C.S. (Mains) 2002]

Correct Answer: (c) Silver - Electronic bulb
Solution:Silver possesses the highest electrical conductivity, thermal

conductivity and reflectivity of any metal.

The correctly matched pairs are as follows:

Magnesium           - Fireworks

Uranium                - Atom bomb

Tungsten               - Electric bulb

Zinc                        - Galvanization

9. Chemically ‘Vermillion’ is [Uttarakhand P.C.S. (Pre) 2005]

Correct Answer: (c) Mercuric Sulphide
Solution:Vermillion is a brilliant red or scarlet pigment originally made from the powdered mineral cinnabar. It is chemically known as mercuric sulphide with the chemical formula HgS. It is virtually insoluble in water.

10. Chemically vermillion is: [Chhattisgarh P.C.S. (Pre) 2015]

Correct Answer: (d) Mercury (II) Sulphide
Solution:Vermillion is a brilliant red or scarlet pigment originally made from the powdered mineral cinnabar. It is chemically known as mercuric sulphide with the chemical formula HgS. It is virtually insoluble in water.
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