Paramagnetism method is not used for the composition determination of __________ in gases.

Various gases present in air are oxygen, nitrogen, argon and neon. The boiling points of these gases are –183, –196, –186 and –246 degrees Celsius, respectively. These gases are separated from each other by the process of fractional distillation. Which of the following statements about the order in which these gases get separated is correct?

A

Neon gas will separate out first and oxygen gas in the end.

B

Neon will liquefy first and oxygen in the end.

C

Oxygen gas will separate out first and nitrogen gas in the end.

D

Oxygen will liquefy first and neon in the end.

In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.
The phrase consists usually of a few words which denote a single idea that __________ a separate part of a sentence. In this respect it differs from theclause, ___________ is a short sentence that forms a distinct part __________ a composition, paragraph, or discourse. Correct phrasing is_______________ by rests, such rests do not break the ______________ of a thought or the progress of the sense.
distinct part __________ a composition,

A

for

B

at

C

of

D

to

Gases emit radiation under which of the following conditions which can be used for determination of gases?

A

When mixed with other gases

B

When kept at suitable temperature

C

With sufficient electrical excitation and at suitable pressures

D

When exposed to radiation

Maximum Paramagnetism shown by the following tripositive ion is:

A

La³⁺

B

Lu³⁺

C

Nd³⁺

D

Ce³⁺

The reduction in size of the magnetic materials beyond a 10nm can result in super paramagnetism.

A

True

B

False

"Paramagnetism" is the property of

A

Paired electrons

B

Completely filled electronics subshells

C

Unpaired electrons

D

Completely vacant electronic subshells

Which of the following are methods of calculating goodwill?
1. Average profit method
2. Super profit method
3. Log method
4. Sum of years digit method
5. Capitalisation of average profit method
6. Capitalisation of super profit method
7. FIFO method
Select the correct answer:

A

1, 2, 5 and 6

B

1, 2, 4 and 5

C

1, 2, 4 and 6

D

1, 2, 6 and 7

By using the method of separation of variables, the determination of solution to P.D.E. reduces to determination of solution to O.D.E.

A

True

B

False

The question below consists of a set of labelled sentences in which first and the last sentence is given. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph. S1- Climatic changes have become more prominent now because of global warming which is a global concern. P- Such gases never let sun rays to go back to the atmosphere, however, trap heat from them. Q- The release of various greenhouse gases in the atmosphere by many natural means and human activities causes an increase in atmospheric temperature because such gases have a capability to absorb all the heat of environment from the sun, burning coal, etc. R- Both are hot issues of the current time and it is the time to analyse causes and prevention methods to prevent global warming. S- Fossil fuels burning release more carbon dioxide which is increasing day by day because of deforestation. S6- Plants are the main source to utilize carbon dioxide as a food, however, we are disturbing the natural cycle by cutting more plants.

A

SRPQ

B

QPRS

C

RQPS

D

None of the above.

All the forms of matter except gases emit electromagnetic radiation continuously. The gases which electrically or thermally excited emit a certain wavelength only, then which of the following is/are true about the process (i) The spacing between the atoms in the other forms of matter is high than in gas (ii) The spacing between the atoms in gases is high than the other forms of matter (iii) The energy of the emitted radiation depends on the spacing between the atoms (iv) The wavelength of the emitted radiation depends on the spacing between the atoms

A

only i and iv

B

only i, iii & iv only

C

iv only

D

All the above

Paramagnetism method is not used for the composition determination of __________ in gases.

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