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Q:

Find the Missing number in the given number series?

5, 9, 15, 23, ?, 45

A) 33	B) 29
C) 31	D) 35

Answer & Explanation Answer: A) 33

Explanation:

The given series follows a pattern that,

+4, +6, +8, +10, +12...

5

5 + 4 = 9

9 + 6 = 15

15 + 8 = 23

23 + 10 = 33

33 + 12 = 45

Hence, the missing number in the series is 33.

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Filed Under: Odd Man Out
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Q:

Simple interest on a certain sum at 7% per annum for 4 years is Rs. 2415. What will be the compound interest on the same principal at 4% per annum in two years?

A) Rs. 704	B) Rs. 854
C) Rs. 893	D) Rs. 914

Answer & Explanation Answer: A) Rs. 704

Explanation:

We know that,

$S . I . = \frac{PTR}{100} \Rightarrow P = \frac{S . I x 100}{T x R} And also, C . I = P [{(1 + \frac{R}{100})}^{n} - 1]$

From given data, P = Rs. 8625

Now, C.I = $8625 [{(1 + \frac{4}{100})}^{2} - 1] = 8625 [{(\frac{26}{25})}^{2} - 1] = 8625 [\frac{676}{625} - 1] = 8625 x \frac{51}{625} C . I = Rs . 703.80$

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Filed Under: Compound Interest
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Q:

In which of the following organelles does photosynthesis take place?

A) Miochondria	B) Chloroplast
C) Central Vacuole	D) Ribosome

Answer & Explanation Answer: B) Chloroplast

Explanation:

Chloroplasts use energy from light to transform carbon dioxide and water into sugar and oxygen.

A green pigment located in membranes within the chloroplasts of plants and algae and in the membranes of certain prokaryotes.

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Filed Under: Biology
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Q:

What sugar is found in RNA?

A) Deoxyribose	B) Ribose
C) Pentose	D) Sucrose

Answer & Explanation Answer: B) Ribose

Explanation:

RNA - ribonucleic acid is a type of nucleic acid. The sugar contained in it is called Ribose.

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Filed Under: Biology
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Q:

The two kinds of Main Memory are

A) Random and sequential	B) ROM and RAM
C) Primary and secondary	D) All the above

Answer & Explanation Answer: B) ROM and RAM

Explanation:

The main memory in computers is where the programs and data are kept when the processor is actively using them.

The main storage region of a computer is of two kinds. They are ::

RAM -- Random Access Memory

ROM -- Read Only Memory.

The_two_kinds_of_Main_Memory_are1552389409.jpg image

The main memory is defined as the central storage in a computer.

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Filed Under: Computer
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Q:

Which of the following pairs is mismatched?

A) Hooke - cell theory	B) van Leeuwenhoek - germ theory
C) Lister - aseptic surgery	D) Jenner - vaccines

Answer & Explanation Answer: B) van Leeuwenhoek - germ theory

Explanation:

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Filed Under: Biology
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Q:

Which color has the highest frequency?

A) Violet	B) Red
C) Indigo	D) Green

Answer & Explanation Answer: A) Violet

Explanation:

In VIBGYOR. It has colors ordered from highest to lowest frequency.

Violet > Indigo > Blue > Green > Yellow > Orange > Red

That says Violet has the highest frequency.

We know, Speed of light = Frequency x Wavelength

=> As frequeny is inversely proportional to wavelength i.e, as frequwncy goes high wavelength goes down.

So, the violet color has the highest frequency.

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Filed Under: Physics
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Q:

Which of the following is not a pure substance?

A) Oxygen	B) Carbon dioxide
C) Water	D) Milk

Answer & Explanation Answer: D) Milk

Explanation:

Milk is not a pure substance since it has so many constituents that can be separated physically.

Compounds are pure substances formed from elements unlike mixtures.

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Filed Under: Chemistry
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