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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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Nucleons are

A) protons and neutrons B) neutrons and electros
C) protons and electrons D) protons, neutrons and electrons
 
Answer & Explanation Answer: A) protons and neutrons

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Q:

Isotopes of the atoms of same element have

A) same number of neutrons B) same number of protons
C) same atomic mass D) different chemical properties
 
Answer & Explanation Answer: B) same number of protons

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Q:

Which of the properties of the element is a whole number

A) atomic mass B) atomic number
C) atomic radius D) atomic volume
 
Answer & Explanation Answer: B) atomic number

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Q:

The number of neutrons in dipositive Zinc ion is

A) 34 B) 36
C) 38 D) 40
 
Answer & Explanation Answer: D) 40

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Q:

The particle with 13 protons and 10 electrons is

A) Al -atom B) Al3+ ion
C) nitrogen isotope D) None of these
 
Answer & Explanation Answer: B) Al3+ ion

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Q:

The nitrogen atom has 7 protons and 7 electrons,The nitride ion will have

A) 10 protons and 7 electrons B) 7 protons and 10 electrons
C) 4 protons and 7 electrons D) 4 protons and 10 electrons
 
Answer & Explanation Answer: B) 7 protons and 10 electrons

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Q:

Rutherford's alpha-scattering experiment related to the size of the

A) nucleus B) atom
C) electron D) neutron
 
Answer & Explanation Answer: A) nucleus

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2 3405
Q:

What is the element present in urea

A) C,H,O B) C,N,O
C) C,N,H D) C,O,N,H
 
Answer & Explanation Answer: D) C,O,N,H

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