General Knowledge

Chemistry - Section 1

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Chemistry - Section 1

Practice and master this topic with our carefully crafted questions.

10 Questions
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Question 51
The mass of one Avogadro number of helium atom is

A
1.00 gram
B
4.00 gram
C
8.00 gram
D
4 x 6.02 x 1023 gram
Correct Answer: Option B

No answer description available for this question.

Question 52
The items amenable to detection by soft x-rays are

A
contrabands
B
lead in bullets
C
narcotics
D
genuine coins from counterfeit coins
Correct Answer: Option D

No answer description available for this question.

Question 53
The material which can be deformed permanently by heat and pressure is called a

A
thermoplastic
B
thermoset
C
chemical compound
D
polymer
Correct Answer: Option B

No answer description available for this question.

Question 54
The mass number of a nucleus is

A
always less than its atomic number
B
the sum of the number of protons and neutrons present in the nucleus
C
always more than the atomic weight
D
a fraction
Correct Answer: Option B

No answer description available for this question.

Question 55
The inexpensive and commonly used variety of glass is called soda glass. It is called so because

A
was used initially for making bottles of soda(carbonated drink)
B
is made using soda(sodium carbonate)
C
was initially used for storing sodium carbonate
D
is made using soda lime
Correct Answer: Option B

No answer description available for this question.

Question 56
The molecules of which gas have highest speed?

A
H2 at -73oC
B
CH4 at 300 K
C
N2 at 1,027oC
D
O2 at 0oC
Correct Answer: Option A

No answer description available for this question.

Question 57
The oldest rocks in the earth's crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock's called

A
granite
B
basalt
C
igneous rocks
D
sedimentary rocks
Correct Answer: Option C

No answer description available for this question.

Question 58
The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is

A
Dalton's law
B
Gay Lussac's law
C
Henry's law
D
Raoult's law
Correct Answer: Option C

No answer description available for this question.

Question 59
The main buffer system of the human blood is

A
H2CO3 - HCO3
B
H2CO3 - CO32-
C
CH3COOH - CH3COO-
D
NH2CONH2 - NH2CONH+
Correct Answer: Option A

No answer description available for this question.

Question 60
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

A
helium
B
ozone
C
oxygen
D
methane
Correct Answer: Option B

No answer description available for this question.

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