Bank PO Questions


Q:

SQL views can be used to hide?

A) Complicated SQL syntax B) Rows
C) Columns D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

In SQL, a SQL view is a virtual table based on the result-set of an SQL statement. A view contains rows and columns, just like a real table.

 

SQL views can be used to hide rows and columns and complicated SQL syntax.

 

The fields in a view are fields from one or more real tables in the database.

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Filed Under: SQL
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3 6228
Q:

Dry distillation of calcium formate gives

A) HCOOH B) CH3COOH
C) HCHO D) CH3CHO
 
Answer & Explanation Answer: C) HCHO

Explanation:

Dry distillation of calcium acetate and calcium formate leads to the formation of aldehydes and ketones.

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Filed Under: Chemistry
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9 6223
Q:

The first women Prime Minister of India?

A) Sarojini Naidu B) Sonia Gandhi
C) Indira Gandhi D) Laxmi Bai
 
Answer & Explanation Answer: C) Indira Gandhi

Explanation:

The first women Prime Minister of India is Indira Gandhi.

The_first_women_Prime_Minister_of_India1542605399.jpg image

 

Following the death of Indian Prime Minister Lal Bahadur Shastri, Indira Gandhi becomes head of the Congress Party and thus prime minister of India in the year 1966 until her death in 1984.

 

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Filed Under: General Awareness
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2 6221
Q:

A train-A passes a stationary train B and a pole in 24 sec and 9 sec respectively. If the speed of train A is 48 kmph, what is the length of train B?

A) 200 mts B) 180 mts
C) 160 mts D) 145 mts
 
Answer & Explanation Answer: A) 200 mts

Explanation:

Length of train A = 48 x 9 x 5/18 = 120 mts

Length of train B = 48 x 24 x 5/18 - 120

=> 320 - 120 = 200 mts.

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Filed Under: Time and Distance
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4 6219
Q:

The instrument used to measure blood pressure?

A) Sphygmomanometer B) Manometer
C) Thermometer D) Stethescope
 
Answer & Explanation Answer: A) Sphygmomanometer

Explanation:

the_instrument_used_to_measure_blood_pressure1538215434.jpg image

The Sphygmomanometer is the instrument that is used for measuring blood pressure.

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Filed Under: General Awareness
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3 6216
Q:

Under which conditions are gases most soluble in water?

A) low pressure and low temperature B) low pressure and high temperature
C) high pressure and low temperature D) high pressure and high temperature
 
Answer & Explanation Answer: C) high pressure and low temperature

Explanation:

Henry's Law tells that the solubility of a gas is directly proportional to the partial pressure of the gas above the solvent. Hence under high pressure, more gas is dissolved.

Also that Henry's Law involves a constant which is temperature-dependent. Under high temperatures, less gas is dissolved whereas under low temperatures, more gas is dissolved.

 

For Example ::  

You can think of a can of soda. The contents are under pressure and if you shake the can before opening, the soda fizzes out all over as you open it. So the higher the pressure, the more gas or more CO2 can be dissolved in the drink.

Eliminate choices 1 and 2. Now focus on the temperature. Soda goes flat (loses carbonation or gas) as it warms up. Soda is usually served cold because more of the carbonation or CO2 stays in the drink when the soda is cold.

 

Hence, in high pressure and low temperature conditions gases are most soluble in water.

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Filed Under: Chemistry
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1 6214
Q:

Which results in an increase in power?

A) doing more work in less time. B) doing less work in more time.
C) doing less work in less time. D) doing more work in more time.
 
Answer & Explanation Answer: A) doing more work in less time.

Explanation:

Doing more work in less time, results in an increase in power to do a work.

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Filed Under: Physics
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6 6212
Q:

Population of a colony of mosquitoes is increasing by 20% per day. If the population on Monday was 3000, on which day of that week the population would be 5184 ?

A) Thursday B) Friday
C) Tuesday D) Monday
 
Answer & Explanation Answer: A) Thursday

Explanation:

Given monday population = 3000
Per day 20% increase in population.

Tuesday population = 3000 + 3000x20/100 = 3000 + 600 = 3600

Wednesday population =3600 + 3600x20/100 = 3600 + 720 = 4320

Thursday population = 4320 + 4320x20/100 = 4320 + 864 = 5184

So that day is Thursday.

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Filed Under: Percentage
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3 6212