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Q:

Which one of the following laws directly expalins the law of coservation of mass

A) Hund's rule B) Dalton's law
C) Avogadro's law D) Berzelius hypothesis
 
Answer & Explanation Answer: C) Avogadro's law

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Filed Under: Chemistry

Q:

The substances that are composed of to or more different elements in fixed proportion by mass are called

A) mixture B) compound
C) element D) None of these
 
Answer & Explanation Answer: B) compound

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Filed Under: Chemistry

Q:

The law of constant proportions was enunciated by

A) Dalton B) Berthelot
C) Avogadro D) Proust
 
Answer & Explanation Answer: D) Proust

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Filed Under: Chemistry

Q:

Sodium carbonate crystal lose water molecules this property is called

A) hygroscopy B) deliquescence
C) efflorescence D) None of these
 
Answer & Explanation Answer: C) efflorescence

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Filed Under: Chemistry

Q:

Name the Scientist who stated that matter can be converted into energy

A) Boyle B) Lavoisier
C) Avogadro D) Einstein
 
Answer & Explanation Answer: D) Einstein

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Filed Under: Chemistry

Q:

When body is accelerated

A) its velocity never changes B) its speed always changes
C) its direction always changes D) its speed may or maynot change
 
Answer & Explanation Answer: D) its speed may or maynot change

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Filed Under: Physics

Q:

Which one of the following groups have quantities that do not have the same dimensions

A) pressure, stress B) velocity, speed
C) force, impulse D) work, energy
 
Answer & Explanation Answer: C) force, impulse

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Filed Under: Physics

Q:

How many Sessions of the Indian Constituent Assembly were conducted for the formulation of Indian Constitution

A) 7 B) 11
C) 12 D) 15
 
Answer & Explanation Answer: B) 11

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Filed Under: Indian Politics