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Q:

Which of the following group is NOT Dobereiner Triads?

 

A) Li, Na, K B) N, P Au
C) Cl, Br, I D) Ca, Sr, Ba

Answer:   B) N, P Au



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Subject: Chemistry
Exam Prep: Bank Exams
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______ decreases the rate of setting of cement.

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Plastic bottles are made of a polymer called PET. The expanded form of PET is

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The Chemical formula of Aluminium Chloride is _____.

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Answer & Explanation Answer: C) AlCl3

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Atomic number of which of the following elements is greater than that of Magnesium

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Answer & Explanation Answer: D) Aluminium

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Q:

The Chemical formula of Urea is

A) (NH4)2CO2 B) (NH2)CO
C) (NH4)2CO D) (NH2)2CO
 
Answer & Explanation Answer: D) (NH2)2CO

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Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) B2H6 B) NF3
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Answer & Explanation Answer: C) CCl3F

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What is the net charge on Calcium fluoride?

A) 1+ B) 0
C) 1­- D) 2­-
 
Answer & Explanation Answer: B) 0

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