Questions

Q:

Permanent Hardness of water can be removed by adding

A) Bleaching powder B) Chlorine
C) Wasshing soda D) Potassium permanganate
 
Answer & Explanation Answer: C) Wasshing soda

Explanation:

Hardness can be removed by adding sodium carbonate (washing soda) or by passing the water through an ion-exchange column.

 

Hardness in water is caused by dissolved magnesium ions and calcium ions. These can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over these rocks on its way to a reservoir.

 

Hardness in water is of two types. They are :

1. Temporary hardness

2. Permanent hardness

 

1. Temporary hardness:: Temporary hardness is caused by dissolved calcium hydrogen carbonate.


2. Permanent hardness:: Permanent hardness is caused by dissolved calcium sulfate. Unlike temporary hardness, it is not removed by boiling the water.

Report Error

View Answer Report Error Discuss

Filed Under: Chemistry
Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank Clerk , Bank PO

25 21427
Q:

Which one of the following is not a true fish?

A) Silver fish B) Saw fish
C) Hammer fish D) Sucker fish
 
Answer & Explanation Answer: D) Sucker fish

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Animals and Birds

272 21399
Q:

Two Fathers and Two Sons Riddle

Two fathers and two sons sat down to eat eggs for breakfast. They ate exactly three eggs, each person had an egg. The riddle is for you to explain how

Answer

one of the 'fathers' is also a grandfather. Therefore the other father is both a son and a father to the grandson. In other words, the one father is both a son and a father.

Report Error

View answer Workspace Report Error Discuss

Subject: Math Puzzles

283 21368
Q:

Rearrange the parts of the sentence in correct order.

 

P: And when they manifest our soils, minds and bodies suffer such as depression and calousy.
Q: These negative states hide in our consciousness at different leads therefore they may manifest permanently or occasionally.
R: Egocentric fixation resists in negative state.
S: Meditation reveals the state of egocentric fixation and free people from suffering, because people are able to see more clearly their negative.

A) RSQP B) RQSP
C) PQRS D) RQPS
 
Answer & Explanation Answer: D) RQPS

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

0 21342
Q:

B.C.Roy Award is given in the field of

A) Journalism B) Medicine
C) Music D) Environment
 
Answer & Explanation Answer: B) Medicine

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Honours and Awards

31 21337
Q:

Part IV of Constitution of India deals with

A) Fundamental Rights B) Citizenship
C) Directive Principles of state Policy D) Union Executive
 
Answer & Explanation Answer: C) Directive Principles of state Policy

Explanation:

Part_IV_of_Constitution_of_India_deals_with1556274385.jpg image

 

Part IV of Constitution of India deals with Directive Principles of state Policy.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Politics
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

30 21287
Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives.

The instructor's rules were simple. Breathe through your mouth, not your nose; else the mask will fog up. Easier said than done; I got it wrong many a time. But once you fought habit and got the hang of it, the panoramic underwater world revealed itself to you with high-definition clarity.

Led by him, I slowly peered through the mask into what till then was crystal-clear water, shimmering in the sunlight. I saw pebbles, sand and my fluid shadow. I was in Nemo's universe. Sea cucumbers, sea anemone, clown fish, star fish, sea horses, parrot fish, butterfly fish and a bevy of colourful salt water fish swam past. A shoal of canary-yellow fish did a merry dance and another with vibrant blue fish followed it. They were oblivious to the snorkelers who struggled to take in the sight of a world so beautiful, so colourful, and resist opening their mouth wide in amazement; the tube would fall off!

How to avoid the mask fogging up?

A) By breathing through the nose and exhaling through the mouth B) By breathing through the mouth
C) By keeping one's head under water D) By looking downwards
 
Answer & Explanation Answer: B) By breathing through the mouth

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: English
Exam Prep: Bank Exams

0 21278
Q:

Which one of the following causes rainfall in the north-western parts of india during winter season ? 

A) Cyclonic depression B) Retreating monsoon
C) Western disturbances D) South West monsoon
 
Answer & Explanation Answer: C) Western disturbances

Explanation:
Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

97 21274