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Q:

Consider the following chemical reaction :

aFe2O3(s) + bCO(g) + cFe(s) + dCO2

In the balanced chemical equation of the above, which of the following will be the values of the coefficients a, b, c and d respectively?

A) 3, 2, 3, 1 B) 1, 3, 2, 3
C) 2, 3, 3, 1 D) 3, 3, 2, 1
 
Answer & Explanation Answer: B) 1, 3, 2, 3

Explanation:

Fe2O3 + 3CO = 2Fe + 3CO2

Hematite + Carbon Monoxide = Iron + Carbon Dioxide

In this reaction, the iron oxide is reduced to iron, and the carbon is oxidised to carbon dioxide.

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Filed Under: Chemistry
Exam Prep: Bank Exams

0 84599
Q:

What will come in place of question mark (?) in the following number series?

4, 3, 4, 7, 15, ?

A) 42 B) 44
C) 53 D) 56
 
Answer & Explanation Answer: B) 44

Explanation:

  4             3             4             7               15        ?
×1-1      ×1+1       ×2-1       ×2+1           ×3-1

 

15x3 - 1 = 45 - 1 = 44

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

8 84522
Q:

Improve the bracketed part of the sentence.

When I last saw Ravi, he (had been running) to catch his bus.

A) ran B) was running
C) had run D) no improvement
 
Answer & Explanation Answer: B) was running

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

0 84437
Q:

Four pairs of words are Given.Find the odd one out.

 

 

A) Chalk: Slate B) Pencil: Notebook
C) Pen: Ink D) Sketch pen: Drawing Book
 
Answer & Explanation Answer: D) Sketch pen: Drawing Book

Explanation:
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Filed Under: Inventions
Exam Prep: Bank Exams

88 84364
Q:

Which musical instrument Ustad Bismillah Khan used to play?

 

A) flute B) Tabla
C) Shehnai D) Sarod
 
Answer & Explanation Answer: C) Shehnai

Explanation:
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Filed Under: General Awareness
Exam Prep: Bank Exams

0 84342
Q:

Find the Odd One Out?

4, 6, 12, 30, 81, 315.

A) 6 B) 12
C) 81 D) 315
 
Answer & Explanation Answer: C) 81

Explanation:

Given the number series is 4, 6, 12, 30, 81, 315.

Here it follows a pattern that

4

4 x 1.5 = 6

6 x 2 = 12

12 x 2.5 = 30

30 x 3 = 90 not equals to 81

90 x 3.5 = 315

 

Hence the odd one in the series is 81.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

9 84330
Q:

Select the synonym of

meadow

 

A) metro B) pasture
C) borough D) civic
 
Answer & Explanation Answer: B) pasture

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

0 84321
Q:

Select the antonym of

bland

A) blah B) insipid
C) tame D) lively
 
Answer & Explanation Answer: D) lively

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

1 84191