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Q:

The activity of rradioisotope change with

A) temperature B) pressure
C) chemical environment D) None of these
 
Answer & Explanation Answer: D) None of these

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Filed Under: Chemistry

Q:

An alloy is

A) a compound B) an allotropic form
C) an isomer D) a mixture
 
Answer & Explanation Answer: D) a mixture

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Filed Under: Chemistry

Q:

The most abundant metal in earth crust is

A) Iron B) magnesium
C) calcium D) aluminium
 
Answer & Explanation Answer: D) aluminium

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Filed Under: Chemistry

Q:

The credit for the discovery of transuranic element goes to

A) Hahn B) Rutherford
C) Seaborg D) Curie
 
Answer & Explanation Answer: C) Seaborg

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Filed Under: Chemistry

Q:

A pure substance can only be

A) Compound B) an element
C) an element or a compound D) a heterogeneous mixture
 
Answer & Explanation Answer: C) an element or a compound

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Filed Under: Chemistry

Q:

Heat energy of an object is

A) the average energy of the molecules of the object B) the total energy of the molecules of the object
C) the average velocity of the molecules of the object D) the average potential energy of the molecules of the object
 
Answer & Explanation Answer: B) the total energy of the molecules of the object

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Filed Under: Physics

Q:

Which of the following physical quantities do not have same dimensions

A) Force and Pressure B) Work and Energy
C) Impulse and momentum D) Weight and Force
 
Answer & Explanation Answer: A) Force and Pressure

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Filed Under: Physics

Q:

One astronomical unit is the average distance between

A) Earth and the Sun B) Earth and the Moon
C) Jupiter and the Sun D) Pluto and the Sun
 
Answer & Explanation Answer: A) Earth and the Sun

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Filed Under: Physics