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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



Explanation:
Subject: Chemistry
Exam Prep: Bank Exams
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C) Ionic D) Co­-ordinate
 
Answer & Explanation Answer: B) Polar covalent

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Which of the following elements has the lowest melting point?

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The Chemical formula of Ammonium chloride is ___________.

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Answer & Explanation Answer: D) NH4Cl

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What chemical is injected into a person's body when an ant bites?

A) Formic Acid B) Acetic Acid
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Answer & Explanation Answer: A) Formic Acid

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Q:

Which of the following elements has the lowest melting point?

A) Tin B) Hydrogen
C) Carbon D) Sodium
 
Answer & Explanation Answer: B) Hydrogen

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_____ is the fourth state of matter.

A) Plasma B) Steam
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Answer & Explanation Answer: A) Plasma

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Which of the following is not a Halon gas ?

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Answer & Explanation Answer: A) methane

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