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Showing posts with label chemistry. Show all posts
Showing posts with label chemistry. Show all posts

Tuesday 7 July 2015

Photosynthesis, Fermentation or Zymology

Post  247

CAPF 2014 Exam Questions

Question 124 Consider the following statements describing the functions of plants:
1. Photosynthesis is a process to convert light energy from Sun into chemical energy i.e., Carbohydrates are synthesized from carbon dioxide and water using sun light.
2. Fermentation or Zymology is a metabolic process that converts carbohydrates to alcohals and carbon dioxide.

Which of the statements given above is / are correct?
A) 1 only
B) 2 only
C) Both 1 and 2
D) Neither 1 nor 2
Answer: Both 1 and 2 are correct

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Sunday 5 July 2015

Atom is indivisible

Post 229

Question 32 Who among the following proposed that atom is indivisible?
A) Dalton
B) Berzelius
C) Rutherford
D) Avogadro
Answer: Dalton
Explanation: Dalton in his theory proposed that atom is indivisible building blocks of compounds.

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Which one among the following fuels is used in gas welding?

Post 225

Question 18 Which one among the following fuels is used in gas welding?
A)LPG
B) Ethylene
C) Methane
D) Acetylene
Answer: Acetylene
Explanation: Acetylene is majorily used as fuel in gas welding.

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Electricity is produced through dry cell from

Post 223

Question 15 Electricity is produced through dry cell from
A) chemical energy
B) thermal energy
C) mechanical energy
D) nuclear energy
Answer: chemical energy

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When hard water is evaporated completely

Post 217
Question 7 When hard water is evaporated completely, the white solid remains in the container. It may be due o the presence of
1. Carbonatesof Ca and Mg
2. Sulphates of Ca and Mg
3. Chlorides of Ca and Mg
Select the correct answer using the code given below:
A) 1 and 2 only
B) 1,2 and 3
C) 3 only
D) 1 and 3 only
Answer: B is correct.
Explanation: Hard water contains all the three substances or you can say salts of Ca and Mg.

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Wednesday 1 July 2015

The percentage of carbon in cast iron is

Post 197

Question 93 The percentage of carbon in cast iron is:
A) 6 to 8
B) 3 to 5
C) 0.1 to 0.25
D) 0.5 to 1.5
Answer: 3 to 5


Question 94 The unit of noise pollution (level) is
A) decibel
B) decimal
C) ppm
D) None of These
Answer: decibel
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Tuesday 30 June 2015

The compound that has the least value for octane number is

Post 179

Question 57 The compound that has the least value for octane number is:
A) 2,2-dimethylhexane
B) n-heptane
C) 2- methylheptane
D) Iso-octane
Answer: n-heptane
Explanation: n-heptane has 0 octane number or you can say 0 octane rating.

Question 58 The current spell of cold wave in the US has been a fall out of the 
A) climate and energy
B) political administration
C) polar vortex
D) biodiversity and habitats
Answer: polar vortex


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Sunday 31 May 2015

Who operates the monetary policy in India?

Question 81 Who operates the monetary policy in India ?
A. Ministry of finance
B. Reserve bank of lndia
C.Security and exchange board of India
D. None of these
Answer: Reserve bank of India(RBI)

Question 82 The point where the energy is released during an earthquake is called-
A. epicentre
B. hypocentre
C. circumcenter
Answer : epicentre

Question 83 The pH of Human Blood is ___?
A. 7.4
B. 7.2
C. 7.8
D. 6.6
Answer 7.4
Explanation : Blood pH is within the narrow range of 7.35 to 7.45.

 Question 84 बैँको का बैँक " किसे कहते है ?(Bank of Banks)
A स्टेट बैँक ऑफ इंडिया (State Bank of India)
B भारतीय रिजर्व बैँक (Reserve Bank of India)
C युनाइटेड बैँक ऑफ इंडिय (United Bank of India)
D पंजाब नेशनल बैँक (Punjab National Bank)

Answer: Reserve Bank of India


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Wednesday 20 May 2015

The rusting of metal iron in air needs both

SSC CGL 26 Oct 2014 Evening Shift Questions

Question 87: The rusting of metal iron in air needs both
A) carbon dioxide and moisture
B) Water and paint
C) Oxygen and grease
D) Oxygen and moisture
Answer : Oxygen and moisture

Other Questions


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Which of the following is used in pencils?

SSC CGL 26 Oct 2014 Evening Shift Questions

Question 85 Which of the following is used in pencils?
A) Sulphur
B) Phosphorus
C) Charcoal
D) Graphite
Answer: Graphite
Other Questions


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Iodine test is used to detect

SSC CGL 26 Oct 2014 Evening Shift Questions

Question 84 Iodine test is used to detect
A) Protein
B) Fat
C) Cholesterol
D) Carbohydrate
Answer: Carbohydrate

Other Questions


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Acid rain is caused by

SSC CGL 26 Oct 2014 Evening Shift Questions

Question 83 Acid rain is caused by
A) SO2 and O2
B) SO2 and NO2
C) NO2 and O2
D) CO and NO2
Answer : SO2 and NO2



Other Questions


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The total energy of an electron inside an atom is

SSC CGL 26 Oct 2014 Evening Shift Questions

Question 81 The total energy of an electron inside an atom is
A) more than zero
B) less than zero
C) infinite
D) zero
Answer: less than zero


Other Questions


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