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Q:

What is the gram formula mass of K2CO3?

A) 147 B) 138
C) 129 D) 116
 
Answer & Explanation Answer: B) 138

Explanation:

The gram formula mass of a compound is nothing but the molar mass.

The molar mass of K2CO3 (Potassium Carbonate) is given by

Atomic weights of individual elements are

 

K (Potassium) = 39 g

C (Carbon) = 12 g

O (Oxygen) = 16 g

 

Hence, that of K2CO3 = 39(2) + 12 + 16(3)

= 78 + 12 + 48

= 138.

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Q:

The 'Todas' are one of the major tribes found in

A) Sikkim B) Assam
C) Nilgiris D) The Andaman and Nicobar Islands
 
Answer & Explanation Answer: C) Nilgiris

Explanation:

There are 5 other primitive tribes. They are the Andamanese, the Onges, Jarawas, Nicobarese and Shompens

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Q:

The transport phenomenon occurs only in _____ state of a gas and is ______

A) Non-equilibrium, irreversible B) Non-equilibrium, reversible
C) equilibrium, irreversible D) equilibrium, reversible
 
Answer & Explanation Answer: C) equilibrium, irreversible

Explanation:

The transport phenomenon occurs only in equilibrium state of a gas and is irreversible.

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Q:

The popular Access Method for computer network is

A) Ethernet B) Token Ring
C) Bus Token D) None
 
Answer & Explanation Answer: B) Token Ring

Explanation:
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Q:

Megahertz is a measurement of

A) Frequency B) Speed
C) Wavelength D) Capacity
 
Answer & Explanation Answer: A) Frequency

Explanation:

Megahertz is used to measure wave frequencies, as well as the speed of microprocessors. One MHz represents one million cycles per second. The speed of microprocessors, called the clock speed.

frequency_measurement1532346951.png image

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Q:

Which best describes the meaning of the term theorem?

A) A conclusion proved by deductive reasoning B) A statement explaining the meaning of a geometric term
C) A conjecture based on inductive reasoning D) A statement that is accepted as true without proof
 
Answer & Explanation Answer: A) A conclusion proved by deductive reasoning

Explanation:
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Q:

A container contains 165 litres of milk. Some quantity of milk is taken out and half of that quantity of milk, water is added in the container. Now ratio of milk to water in the container becomes 5:3. What is the quantity of water added in it?

A) 40 litre B) 45 litre
C) 60 litre D) 30 litre
 
Answer & Explanation Answer: B) 45 litre

Explanation:

Let amount of milk removed = 2x litre
So, amount of water added = x litre
Now → (165 − 2x)/x = 5/3
x = 45 lit

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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

Solve the value of D?

Answer

A + B = 15 .... (1)


B x C = 84 .... (2)


C ÷ 4 = 3  .... (3)


B + D = 18 .... (4)


From (3), we get C = 12


From (2), we get B = 84/12 = 7


From (1), we get A = 15 - 7 = 8


From (4), we get D = 18 - 7 = 11


 


Hence, D = 11.

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