Class 12th

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New answer posted

10 months ago

There is a sentence that is missing in the paragraph below. Look at the paragraph and decide in which blank (option 1, 2, 3, or 4) the following sentence would best fit.

Sentence: Some of them were with older people, and still others with younger gym-goers, which makes it hard to generalise.

 (1) _______. In one meta-analysis from 2014, researchers combined the data from 14 randomised controlled trials where, for example, half the people consumed powdered whey protein, which is made from the liquid left over when milk is made into cheese, and half had a placebo drink. (2)_________They found that as long as people also did resistan

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Payal Gupta

Contributor-Level 10

The preceding statement before the 4th blank states the difficulties faced by the researchers. And the given sentence is elaborating those difficulties by citing some more examples. Hence, D is the correct choice here.

New answer posted

10 months ago

Unemployment is the problem of every modern nation. Even industrialized nations are not able to ensure a job for everyone. Following the conventional strategy of creating employment, governments of many developing countries try to attract employers (business houses/industrialists) by offering tax rebates and many other facilities so that they locate their upcoming plants on their soil and thereby create industrial employment. But there is a limit to what industry can bring. Also, industrial plants often create toxic waste which results in air and water pollution and environmental problems which can outweigh whatever employment benefit

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Payal Gupta

Contributor-Level 10

Dwindling means to grow less in scope or intensity especially gradually. Subsiding means the same as dwindling.

New answer posted

10 months ago

Unemployment is the problem of every modern nation. Even industrialized nations are not able to ensure a job for everyone. Following the conventional strategy of creating employment, governments of many developing countries try to attract employers (business houses/industrialists) by offering tax rebates and many other facilities so that they locate their upcoming plants on their soil and thereby create industrial employment. But there is a limit to what industry can bring. Also, industrial plants often create toxic waste which results in air and water pollution and environmental problems which can outweigh whatever employment benefit

...more
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Payal Gupta

Contributor-Level 10

Option B states the complete fact from the passage. Other options do not lead to the author's understanding of industry-based employment.

New answer posted

10 months ago

Unemployment is the problem of every modern nation. Even industrialized nations are not able to ensure a job for everyone. Following the conventional strategy of creating employment, governments of many developing countries try to attract employers (business houses/industrialists) by offering tax rebates and many other facilities so that they locate their upcoming plants on their soil and thereby create industrial employment. But there is a limit to what industry can bring. Also, industrial plants often create toxic waste which results in air and water pollution and environmental problems which can outweigh whatever employment benefit

...more
0 Follower 1 View

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Payal Gupta

Contributor-Level 10

The author has started the paragraph showing concern regarding the growing unemployment and then set forth a few drawbacks of industry-based employment. Hence, option C is the best choice and sums up the overall purpose of the passage.

New answer posted

10 months ago

Despite all of the institutional strategies adopted in early America to assure some measure of economic security, huge changes would sweep through America which would, in time, undermine the existing institutions. Four important demographic changes happened in America beginning in the mid-1880s that rendered the traditional systems of economic security increasingly unworkable are the Industrial Revolution, the urbanization of America, the disappearance of the "extended" family and a marked increase in life expectancy.

The Industrial Revolution transformed the majority of working people from self-employed agricultural workers into wage

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Payal Gupta

Contributor-Level 10

Economic security has not been the major changes in America that has been discussed by the author. The author has mentioned the changes in the first paragraph only.

New answer posted

10 months ago

The passage below is accompanied by a set of questions. Choose the best answer to each question.

Despite all of the institutional strategies adopted in early America to assure some measure of economic security, huge changes would sweep through America which would, in time, undermine the existing institutions. Four important demographic changes happened in America beginning in the mid-1880s that rendered the traditional systems of economic security increasingly unworkable are the Industrial Revolution, the urbanization of America, the disappearance of the "extended" family and a marked increase in life expectancy.

The Industrial Revolut

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Payal Gupta

Contributor-Level 10

Option B explains the primary reason very well with all the facts intact. Option A is close but doesn't convey the complete fact and other options are far-fetched.

New answer posted

10 months ago

0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

In B r O 4 , B r has +7 O.S, therefore it only acts as a oxidizing reagent, does not undergo disproportionation reaction

New answer posted

10 months ago

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Vishal Baghel

Contributor-Level 10

P C l 5 ( g ) P C l 3 ( g ) + C l 2 ( g ) (first order reaction)

K = 2 . 3 0 3 1 2 0 l o g ( 5 0 1 0 )      

K = 2 . 3 0 3 * l o g 5 1 2 0 m i n = 2 . 3 0 3 * 0 . 6 9 8 9 1 2 0 = 0.0134 min-1

Rate constant at 300K = 1.34 * 10-2min-1 [the nearest integer = 1.0]

New answer posted

10 months ago

0 Follower 7 Views

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Vishal Baghel

Contributor-Level 10

Total pressure of mixture =   P T o t a l = X A * P A o + X B * P B o = 9 0 * 0 . 6 + 1 5 * 0 . 4 = 6 0 m m

Mole fraction of B in vapour phase, ( X B ' ) = X B * P B o P T o t a l

X B ' = 0 . 4 * 1 5 6 0 = 0 . 1 = 1 * 1 0 1  

New answer posted

10 months ago

0 Follower 2 Views

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Vishal Baghel

Contributor-Level 10

In fcc structure of diamond four C present in fcc lattice and other four C present in tetrahedral voids where 50% of tetrahedral voids are occupied. Hence number of carbon atoms present per unit cell of diamond is 8.

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