Questions

Q:

Consider the electromagnetic radiations having wavelengths 200 nm, 500 nm and 1000 nm. Which wavelength (s) of the following can make visual sensation to a human eye?

A) 200 nm and 500 nm B) 500 nm and 1000 nm
C) 500 nm only D) 200 nm and 1000 nm
 
Answer & Explanation Answer: C) 500 nm only

Explanation:
Visual image of human eye is 390-700 nanometer. So, approximate value is 500 nanometer only.
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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

For intra-State movement, the e-way bill by GST council will be rolled out in a phased manner beginning April 15 and will cover all the States by

A) May 1 B) June 1
C) May 31 D) July 31
 
Answer & Explanation Answer: A) May 1

Explanation:

For intra-State movement, the e-way bill will be rolled out in a phased manner beginning April

15 and will cover all the States by June 1. Businesses will continue to file summary sales return

GSTR-3B until June as the GST (Goods and Services Tax) Council has extended the present

system of return-filing by three months. Electronic way or e-way bill for movement of goods

between States would be implemented from April 1.

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Filed Under: General Awareness
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Q:

Sound waves cannot travel through

A) Gas B) Liquid
C) Vacuum D) Solid
 
Answer & Explanation Answer: C) Vacuum

Explanation:

Sound waves cannot travel through a Vacuum.

 

A vacuum is an area without any air, like space. So sound cannot travel through space because there is no matter for the vibrations to work in.

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Filed Under: Physics
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Q:

Which of the following contributed to the failure of prohibition?

A) it was not imposed strictly on immigrants B) many americans didnt consider drinking to be a crime
C) it adversely affected american productivity D) organized crime controlled illegal alcohol production
 
Answer & Explanation Answer: D) organized crime controlled illegal alcohol production

Explanation:

Crime connected with illegal alcohol production and sale became a major issue so that even many people who had originally supported Prohibition decided that it needed to be repealed.

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Filed Under: World History
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Q:

What are the different types of SQL statements ?

Answer

SQL statements are broadly classified into three. They are


1. DDL – Data Definition Language


DDL is used to define the structure that holds the data. For example, Create, Alter, Drop and Truncate table.


2. DML – Data Manipulation Language


DML is used for manipulation of the data itself. Typical operations are Insert, Delete, Update and retrieving the data from the table. The Select statement is considered as a limited version of the DML, since it can't change the data in the database. But it can perform operations on data retrieved from the DBMS, before the results are returned to the calling function.


3. DCL – Data Control Language


DCL is used to control the visibility of data like granting database access and set privileges to create tables, etc. Example - Grant, Revoke access permission to the user to access data in the database.

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Q:

In economics, if a good is inelastic,

A) its supply or demand is not sensitive to price changes. B) consumers have lost an interest in purchasing it.
C) producers have lost an interest in manufacturing it. D) its supply or demand is too sensitive to price changes.
 
Answer & Explanation Answer: A) its supply or demand is not sensitive to price changes.

Explanation:

If the percent change in quantity demanded is less than the percent change in price, economists label the demand for the good as inelastic.

A good that is inelastic does not have very stretchy demand. In economic terms, the quantity demanded does not change a lot when the price changes.

 

So, if the price of a good increases by 10 percent and the quantity demanded decreases by only 5 percent or less than 10, that good is said to have inelastic demand.

 

Hence, in this case, consumers are not considered very sensitive, or responsive, to a change in the price of that good.

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Filed Under: Indian Economy
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Q:

Which gas is not produced by volcanic eruptions?

A) Methane B) carbon dioxide
C) sulfur dioxide D) hydrochloric acid
 
Answer & Explanation Answer: A) Methane

Explanation:

Many toxic gases along with water vapour are emitted in vocanic eruptions. All such toxic gases include hydrochloric acid, sulfur dioxide, carbon dioxide, hydrogen sulfide and carbon monoxide. Methane is not produced in the volcanic eruptions.

which_gas_is_not_produced_by_volcanic_eruptions1559201445.jpg image

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Filed Under: Chemistry
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Q:

The relationship between a cathode and an anode involves

A) Electrons B) Neutrons
C) Protons D) Diodes
 
Answer & Explanation Answer: A) Electrons

Explanation:

The relationship between a cathode and an anode involves the transfer of electric charge between them. The cathode is the negative terminal on the battery, which has zero electric potential. The anode is the positive terminal on the battery and has the battery's maximum electric potential. Current flows from the battery's anode (positive terminal) to the cathode (negative terminal). In electron flow, electrons leave the negative side of the battery and move towards the positive side of the battery.

 

Hence, The relationship between a cathode and an anode involves Electrons.

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Filed Under: Chemistry
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