Quiz Discussion

In a laboratory experiment, a sample of air which is a mixture of oxygen and water vapour is taken. Water vapour, contains hydrogen and oxygen gases. If air contains a total of 70% oxygen (including that contained in the water vapour) by weight while water vapour contains 16.66% of oxygen by weight, how many kilograms of water vapour is present in 1 kilogram of air?

Course Name: SQL -Structured Query Language

  • 1]

    0.20

  • 2]

    0.36

  • 3]

    0.32

  • 4]

    0.25

Solution
No Solution Present Yet

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# Quiz
1
Discuss

The marked price of an article is Rs 2400. It is sold at two successive discounts of 10% and 15%. What is the selling price (in Rs) of the article?

  • 1]

    1836

  • 2]

    1924

  • 3]

    1848

  • 4]

    1976

Solution
2
Discuss

A customer asks for the production of x number of goods. The company produces y number of goods daily. Out of which z% are units for sale. The order will be completed in :

  • 1]

      days

  • 2]

    days

  • 3]

    days

  • 4]

    days

  • 5]

    Cannot determined

Solution
3
Discuss

The price of Maruti car rises by 30 percent while the sales of the car come down by 20%. What is the percentage change in the total revenue?

  • 1] - 4%
  • 2] - 2%
  • 3] + 4%
  • 4] + 2%
  • 5] None of these
Solution
4
Discuss

The number which exceeds 16% of it by 42 is :

  • 1]

    50

  • 2]

    52

  • 3]

    58

  • 4]

    60

  • 5]

    None Of These

Solution
5
Discuss

In an examination 80% candidates passed in English and 85% candidates passed in Mathematics. If 73% candidates passed in both these subjects, then what per cent of candidates failed in both the subjects?

  • 1] 8
  • 2] 15
  • 3] 27
  • 4] 35
Solution
6
Discuss

Ram spends 30% of his salary on house rent, 30% of the rest he spends on his children's education and 24% of the total salary he spends on clothes. After his expenditure, he is left with Rs. 2500. What is Ram's salary?

  • 1] Rs. 11,494.25
  • 2] Rs. 20,000
  • 3] Rs. 10,000
  • 4] Rs. 15,000
Solution
7
Discuss

What is 15 percent of Rs. 34.? 

  • 1]

    Rs 3.40

  • 2]

    Rs 3.75

  • 3]

    Rs 4.5

  • 4]

    Rs 5.1

Solution
8
Discuss

Every month a man consumes 25 kg rice and 9 kg wheat. The price of rice is 20% of the price of wheat and thus he spends total Rs. 350 on the rice and wheat per month. If the price of wheat is increased by 20% then what is the percentage reduction of rice consumption for the same expenditure of Rs. 350? Given that the price of rice and consumption of wheat is constant :

  • 1] 40%
  • 2] 25%
  • 3] 36%
  • 4] 24%
  • 5] Cannot determined
Solution
9
Discuss

(X% of Y) + (Y% of X) is equal to:

 

  • 1] X% of Y
  • 2] 20% of XY
  • 3] 2% of XY
  • 4] 2% of 100 XY
Solution
10
Discuss

The population of a town increased from 175000 to 262500 in a decade. The average percent increase of population per year is?

  • 1]

    33.33%

  • 2]

    5%

  • 3]

    6%

  • 4]

    8.75%

Solution
# Quiz