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1
Q:

In modern periodic table while going from top to bottom in a group ______.

 

A) size of an atom increases B) size of an atom decreases
C) ionisation energy of an atom increases D)  size and ionisation energy of an atom increases

Answer:   D)  size and ionisation energy of an atom increases



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Subject: Chemistry
Exam Prep: Bank Exams
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The common name of dichlorodifluoromethane is _____.

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Kidney stones are composed of ______.

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Which of the following can be beaten and converted into thin sheets?

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Answer & Explanation Answer: A) Zinc

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The substances which have very low ignition temperature and can easily catch fire with a flame are called _____________ substances.

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Answer & Explanation Answer: D) inflammable

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Brownish film formed on iron when left in open is called?

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Answer & Explanation Answer: D) Rust

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Q:

The temperature at which a solid melts to become a liquid at the atmospheric pressure is called its ___________.

A) Crystallisation B) Crystallisation
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Answer & Explanation Answer: B) Crystallisation

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Chemical formula for sulphurous acid is:

A) H2SO4 B) H2SO3
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The melting point of ice is ____ K.

A) 253.16 B) 263.16
C) 273.16 D) 283.16
 
Answer & Explanation Answer: C) 273.16

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