Questions

Q:

The velocity required to place a vehicle in orbit round the moon is _______ that required to place it in orbit round the earth 

A) less than B) Greater than
C) equal to D) greater than or equal to
 
Answer & Explanation Answer: A) less than

Explanation:

This orbital velocity at the moon is less because orbital velocity = rg

 

where 'r ' is the orbital radius. i.e the distance of the body from the center of the earth and 'g' is the acceleration due to gravity on the body in question. In the case of the moon, both r and g are less than in the case of the earth.

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Filed Under: Physics
Exam Prep: AIEEE , GATE

2 3208
Q:

In which layer is the temperature the lowest?

A) Troposphere B) Ionosphere
C) Mesosphere D) Stratosphere
 
Answer & Explanation Answer: C) Mesosphere

Explanation:

The mesosphere lies above the stratosphere and extends to an altitude of about 85 km. This is layer is often referred to as the cold layer, as the lowest readings in the atmosphere are found here.

 

Temperature decreases with height, reaching a minimum average value of -90 ºC at the top of the layer.

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Filed Under: General Awareness
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

5 3207
Q:

The cause of Beri Beri was discovered by

A) Eijkman B) Macmillan
C) Alexanderson D) Cockrell
 
Answer & Explanation Answer: A) Eijkman

Explanation:
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Filed Under: Inventions

4 3207
Q:

Which Indian born scientist was awarded the Nobel prize in Astrophysics

A) Prof Chandra Shaker B) Sir C.V.Raman
C) Satyendra Nath Bose D) Vikram Sarabhai
 
Answer & Explanation Answer: A) Prof Chandra Shaker

Explanation:
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Filed Under: Books and Authors

1 3207
Q:

How do you detect if two 8-bit signals are same?

Answer

Pass input to XOR and give their outputs to OR gate, if your output is 0 both 8-bit signals are same.


OR


Pass input to XNOR and give their outputs to AND gate, if your output is 1 both 8-bit signals are same. 

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Subject: Hardware

1 3206
Q:

Which one of the following river valleys of India is under the influence of intensive gully erosion?

A) Kosi B) Chambal
C) Damodar D) Brahmaputra
 
Answer & Explanation Answer: B) Chambal

Explanation:

The Chambal's lower course is lined by belt of badland gullies resulting from accelerated soil erosion and is the site of a major projectin soil conservation.Chambal Project is a joint project from both Madhya Pradesh and Rajasthan government, which aims at harvesting the Chambal River for irrigation, power prevention and control of soil erosion in the valley

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Filed Under: General Science
Exam Prep: Bank Exams

5 3206
Q:

What is schema?

Answer

The description of a data base is called the database schema , which is specified during database design and is not expected to change frequently . A displayed schema is called schema diagram .We call each object in the schema as schema construct.

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Subject: Database
Job Role: Database Administration

0 3206
Q:

Oxygen in our blood is transported by a protein named

A) keratin B) myoglobi
C) collagen D) haemoglobin
 
Answer & Explanation Answer: D) haemoglobin

Explanation:

Oxygen in our blood is transported by a protein named Haemoglobin.

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Filed Under: Biology
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8 3205