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Q:

The luster of a metal is due to presence of free electrons.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, The luster of a metal is due to presence of free electrons. Luster means shine or soft glow. We know that metals have the quality of reflecting light from its surface.

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Subject: Chemistry
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

1 2448
Q:

Refer the below data table and answer the following question.

Between 10pm to 6am, a fitness band records the following data. How long was the user in Deep Sleep or was in Extremely light sleep?

A) 3.1 hours B) 1.1 hours
C) 1.6 hours D) 2.1 hours
 
Answer & Explanation Answer: C) 1.6 hours

Explanation:
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Filed Under: Table Charts
Exam Prep: Bank Exams

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Q:

Arzoo was born on 25th January 2015, while Aastha was born 554 days later. On which date was Aastha born?

A) 2nd August 2016 B) 31st July 2016
C) 1st August 2016 D) 3rd August 2016
 
Answer & Explanation Answer: C) 1st August 2016

Explanation:
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Filed Under: Calendar
Exam Prep: Bank Exams

47 2447
Q:

If (4a +7b) (4c-7d) = (4a -7b) (4c +7d, then which one of the following is correct ?

A) a/b = c/d B) a/d = c/b
C) a/b = d/c D) none
 
Answer & Explanation Answer: A) a/b = c/d

Explanation:

(4a+7b)(4c-7d) = (4a-7b)(4c+7d)

(4a+7b)/(4a-7b) = (4c+7d)/(4c-7d)

Using componendo and dividendo

(4a+7b)+(4a-7b) / (4a+7b)-(4a-7b)

= (4c+7d)+(4c-7d) / (4c+7d)-(4c-7d)

Or 8a/14b = 8c/14d

Or a/b = c/d

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Filed Under: Simplification
Exam Prep: Bank Exams

2 2447
Q:

A, B and C are three students. A got 18% more marks than B and 12% less than C. If B got 220 marks, then how much marks C has got?

A) 295 B) 230
C) 224 D) 245
 
Answer & Explanation Answer: A) 295

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

7 2446
Q:

The ratio of present ages of R and S is 11:17. Before 11 years the ratio of their ages was 11:20. What is R's present age (in years)?

A) 51 B) 33
C) 22 D) 40
 
Answer & Explanation Answer: B) 33

Explanation:
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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Twice the difference between two numbers is equal to their sum. If one number is 15,find the other number.

 

A) 15 B) 10
C) 5 D) 20
 
Answer & Explanation Answer: C) 5

Explanation:
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Filed Under: Inventions
Exam Prep: Bank Exams

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Q:

"National Volunteer Day" is observed on ____ ?

A) 1st October B) 21st September
C) 11th October D) 29th September
 
Answer & Explanation Answer: B) 21st September

Explanation:

"National Volunteer Day" & "International Peace Day" are observed on 21st september every year.

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Filed Under: Important Days and Years
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

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