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Q:

Which of the following is a false statement?

A) As bond order increases the strength of the bond increases B) Bond order is proportional to the bond length
C) Molecules with negative bond order are highly unstable D) Bond order is inversely proportional to the bond length
 
Answer & Explanation Answer: B) Bond order is proportional to the bond length

Explanation:

Bond order is proportional to the bond length is a False statement since Bond order is inversely proportional to the bond length.

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Filed Under: Chemistry
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Q:

The purpose of choke in tube light is

A) Induce high voltage B) Induce low resistance
C) Induce high resistance D) Induce low voltage
 
Answer & Explanation Answer: A) Induce high voltage

Explanation:

When the switch is ON, in a tube light choke is nothing but the coil/ballast ( inductor) which is used to induce the high voltage across it. as we know that inductor has property to induce high voltage for the brief period of time, this high voltage is required to ionize the gases in the starter.

Then gas inside the starter gets ionized due to this full voltage and heats the bimetallic strip that is caused to be bent to connect to the fixed contact. Current starts flowing through the starter. Although the ionization potential of the neon is the little bit more than that of the argon but still due to small electrode gap high voltage gradient is appeared in the neon bulb and hence glow discharge is started first in a starter.

As voltage gets reduced due to the current causes a voltage drop across the inductor, the strip cools and breaks away from the fixed contact. At that moment a large L di/dt voltage surge comes across the inductor at the time of breaking.

This high valued surge comes across the tube light electrodes and strikes penning mixture (mixture argon gas and mercury vapor).

Gas discharge process continues and current gets the path to flow through the tube light gas only due to low resistance as compared to the resistance of starter.

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Filed Under: Physics
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Q:

Which of the following is an example of chemical weathering?

A) Oxidation B) Acid rains
C) Carbonation D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

Chemical weathering is what happens when rocks are broken down and chemically altered.

Chemical weathering is the breakdown of rocks by chemical reactions. Chemical weathering involves changes in the chemical composition of the existing rock to form new rock. Some examples of chemical weathering are hydrolysis, oxidation, carbonation, dissolution, etc.

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Filed Under: Chemistry
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Q:

Which of the following is not an Input device?

A) Joystick B) Headphones
C) Mouse D) Scanner
 
Answer & Explanation Answer: B) Headphones

Explanation:

Here Joystick, Mouse and Scanner are Input devices through which data is given to the computers. But Headphones are output devices through which sound comes as an output from the computer or any devices.

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Q:

Which of the Following is an Amorphous solid?

A) Quartz Glass(Sio2) B) Chrome Alum
C) Silicon Carbide(SiC) D) Graphite
 
Answer & Explanation Answer: A) Quartz Glass(Sio2)

Explanation:

An amorphous or non-crystalline solid is a solid that lacks the long-range order that is characteristic of a crystal. In Brief, An amorphous solid is any noncrystalline solid in which the atoms and molecules are not organized in a definite lattice pattern. Such solids include glass, plastic, and gel.

Quartz glass (SiO2) is an amorphous solid due to its short range order of constituent particles. Note Quartz is a crystalline solid while quartz glass is an amorphous solid.

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Q:

That which cannot be corrected

A) Incorrigible B) Illegible
C) Illegal D) Indelible
 
Answer & Explanation Answer: A) Incorrigible

Explanation:

The One-word substitute for That which cannot be corrected is Incorrigible.

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Q:

Keoladeo National Park is situated in which state?

A) Jharkand B) Rajasthan
C) Madhya Pradesh D) Uttar Pradesh
 
Answer & Explanation Answer: B) Rajasthan

Explanation:
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Filed Under: Indian Geography
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Q:

With which Bank Google has tied up for its mobile payments app Tez?

A) SBI Bank B) Axis Bank
C) HDFC Bank D) PNB Bank
 
Answer & Explanation Answer: A) SBI Bank

Explanation:

Internet giant Google has tied up with State Bank of India (SBI) for its mobile payments app Tez. Through this partnership, Google Tez will allow users to create an SBI UPI Id - @oksbi and get access.

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Filed Under: General Awareness
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