Questions

Q:

Which of the following is an example of an optical disk?

A) Digital versatile disks B) Magnetic disks
C) Memory disks D) Data bus disks
 
Answer & Explanation Answer: A) Digital versatile disks

Explanation:
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102 19970
Q:

Which of the following parts of the sun is easily visible only during a total solar eclipse? 

A) core B) photosphere
C) sunspots D) corona
 
Answer & Explanation Answer: D) corona

Explanation:
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Filed Under: General Science

139 19947
Q:

Transmission data rate is decided by

A) Transport layer B) Network layer
C) Physical layer D) Data link layer
 
Answer & Explanation Answer: C) Physical layer

Explanation:

The speed of the transmission data is generally determined by the cables or connectors we use for data transmission. In networking, layer-1 the physical is which deals with the network cables like pins, usb, connectors, etc... we use for data transmission.

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19 19946
Q:

Which of the following mountains are the oldest according to geological history?

A) Nilgiris B) Satpura Range
C) Vindhyas D) Aravalli
 
Answer & Explanation Answer: D) Aravalli

Explanation:

According to geological history, the important mountains of india arranged in the order of age starting from the oldest are the Aravallis , the westerm Ghats, Vindhya and Satpura, the Nilgiris , and the Himalayas.

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Filed Under: Indian Geography

42 19940
Q:

 A goal of data mining includes which of the following?

A) To explain some observed event or condition B) To analyze data for expected relationships
C) To confirm that data exists D) To create a new data warehouse
 
Answer & Explanation Answer: A) To explain some observed event or condition

Explanation:
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26 19915
Q:

Which one of the following statements is not correct?

 

A) Fischer projection represents the molecule in an eclipsed conformation B) Newman projection can be represented in eclipsed, staggered and skew conformations
C) Fischer projection of the molecule is its most stable conformation D) In Sawhorse projections, the lines are inclined at an angle of 120 deg to each other.
 
Answer & Explanation Answer: C) Fischer projection of the molecule is its most stable conformation

Explanation:

Fischer projections were originally proposed for the depiction of carbohydrates and used by chemists, particularly in organic chemistry and biochemistry.A Fischer projection always uses an eclipsed conformation. A Newman diagram can represent either an eclipsed conformation or a staggered conformation or a skew conformation.

 

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Filed Under: Chemistry
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0 19896
Q:

1 Joule is Equal to

A) 10^3 ergs B) 10^6 ergs
C) 10^7 ergs D) 10^5 ergs
 
Answer & Explanation Answer: C) 10^7 ergs

Explanation:

1 Joule107 ergs = 0.000239 Kilo Calories.

      • Joule is the Unit of Energy.

Joule is equal to Energy transferred to an object when a force of One Newton acts on that object in the direction of its motion through a distance of one metre.(1 N-m)

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52 19886
Q:

Consider the following statements :

1. There is no net moment on a body which is in equilibrium.

2. The momentum of a body is always conserved.

3. The kinetic energy of an object is always conserved.

Which of the statements given above is/are correct?

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

Explanation:

There are two conditions that must be met for an object to be in equilibrium. The first condition is that the net force on the object must be zero for the object to be in equilibrium. If net force is zero, then net force along any direction is zero.

Kinetic energy (KE) is the energy of motion, and kinetic energy is not always conserved in a collision

Energy and momentum are always conserved.

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Filed Under: Physics
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2 19885