Questions

Q:

As water is cooled from 4 deg C to 0 deg C, its density

A) increases B) decreases
C) remains same D) None of the above
 
Answer & Explanation Answer: B) decreases

Explanation:

As water is cooled from 4 deg C to 0 deg C, the water reaches its freezing point and starts forming ice crystals. Then the volume of that ice cubes increases and its density decreases. Hence, it is the reason that ice will float on water as ice has less density than the water.

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Filed Under: Physics
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Q:

The law of conservation of energy states that

A) energy can neither be created nor destroyed B) energy can either be created nor destroyed
C) energy can neither be created or destroyed D) energy can either be created or destroyed
 
Answer & Explanation Answer: A) energy can neither be created nor destroyed

Explanation:

The law of conservation of energy is a law of science which states that energy can neither be created nor destroyed - only converted from one form of energy to another.

In 1842, Julius Robert Mayer discovered the Law of Conservation of Energy.

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Q:

What happens the first time buck is beaten?

A) He swears that he'll someday have his revenge on Spitz. B) He learns that he can't get away with stealing another dog's food.
C) He learns he has to obey men, but decides never to surrender inside. D) He has his spirit as well as his body crushed.
 
Answer & Explanation Answer: C) He learns he has to obey men, but decides never to surrender inside.

Explanation:
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Q:

The international date line passes through

A) Hudson Bay B) Denmark Strait
C) Bering Strait D) Baffin Bay
 
Answer & Explanation Answer: C) Bering Strait

Explanation:
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Q:

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


Dyslexia is a perceptual disorder often occurring in persons of normal, or even above average intelligence. The reader is unable to perceive correctly what is on a page. Letters and numbers often appear reversed: "b" seems to be "d","quite" is "quiet" and "from" is "form". The reader tends to leave out letters or words or insert words or letters that are not there. Vowel and consonant sounds may be confused. Many dyslexics are left­handed or able to write with either hand. They often confuse left and right. Learning to speak may also be delayed beyond infancy. The condition seems to be inherited. It may persist into adulthood. However, with early recognition and specialized approaches to teaching reading, most dyslexics can learn to read.

Some researchers believe that latent dyslexia may be aggravated by the way reading is taught. The modern whole­word, or look­and­say, method seems to be more of a hindrance to learning for dyslexics than it is for ordinary pupils. The phonetic method of teaching students to learn letters and sound them out appears to achieve better reading results. The problem of words that cannot be sounded out ­ such as rough, laugh or through ­ is not solved by phonetics. These words must simply be memorized. However, for children with dyslexia the problem can be compounded by the failure of parents or teachers to recognize the condition. This can easily lead to emotional problems for dyslexic children, who cannot understand their failure to keep up with their classmates.


The problem of perception can be compounded by the failure of parents and teachers to

A) provide treatment B) recognize the condition
C) correct the child at infancy D) understand the child
 
Answer & Explanation Answer: B) recognize the condition

Explanation:
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Filed Under: English
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Q:

Is yeast a fungus or bacteria?

Answer

Yeast belongs to members of the Kingdom Fungi.


 


Yeast are single-celled microorganisms that are classified, along with molds and mushrooms in Fungi family. 


 


Yeasts are evolutionally diverse and are therefore classified into two separate phyla, Ascomycota or sac fungi and Basidiomycota or higher fungi, that together form the subkingdom Dikarya.

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Q:

Mid - Day is a scheme to provide nutrious food to

A) Those taking treatment in hospitals B) School going children
C) Daily Wage Employees D) Girls who are residing in girls
 
Answer & Explanation Answer: B) School going children

Explanation:
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Q:

Synchronous motor can operate at

A) Lagging power factor only B) Unity power factor only
C) Leading power factor only D) At any power factor
 
Answer & Explanation Answer: D) At any power factor

Explanation:

synchronous motor can operate at lag lead and unity power factor also why because it is mainly depends on excitation

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