161.
A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of
A
12
B
15
C
6
D
18
Loading practice questions
Browse topic-based Chemistry practice sets.
608 practice sets · Page 9 of 31
A carbon atom with 6 protons, 6 electrons, and 6 neutrons would have a mass number of
12
15
6
18
Will a noble gas gain or lose an electron?
gain
lose
both
neither
Which one of the following nobel gas is least polarizable
Argon
Helium
Neon
Xenon
Which of the following is the life saving mixture for an asthma patient?
Mixture of Neon and Oxygen
Mixture of Helium and Oxygen
Mixture of Argon and Oxygen
Mixture of Xenon and Nitrogen
Which noble gas is the exception to the octet (stable-8) rule?
neon
helium
argon
xenon
Which noble gas is found in the Sun?
hydrogen
helium
neon
krypton
Which noble gas is found in signs or light displays?
neon
argon
helium
krypton
Which noble gas can harm you if you inhale it?
all of them
xenon
radon
krypton
Which nobel gas is most soluble in water
Argon
Helium
Neon
Xenon
Which is the lightest gas
Helium
Oxygen
Hydrogen
Nitrogen
What is another name for the noble gases?
stable gases
cool gases
inert gases
reactive gases
The nobel gas which forms maximum number of compound is
Argon
Helium
Xenon
Neon
The inert gases are
Polyatomic
Triatomic
Diatomic
Monoatomic
Nobel gases do not react with other elements because
They have completely paired up and stable electron shells
The size of ther atoms are very small
They are not found in abundance
Are monoatomic
Nobel gases are group of elements which exhibit
high chemical activity
low chemical activity
minimum electronegativity
much paramagnetic properties
How many valence electrons does a noble gas typically have?
8
6
4
2
Which sample contains the largest number of atoms?
1 mg of
1 mg of
1 mg of Na
1 mL of water
Which of the following weighs the most ?
one g-atom of nitrogen
One mole of water
One mole of sodium
One molecule of H2So4
Which of the following contains maximum no. of molecules ?
200 cc of at S.T.P
150 cc of N3 at S.T.P
50 cc of at S.T.P
150 cc of at S.T.P
Which has maximum number of atoms ?
24g of c (12)
56g of Fe (56)
27g of Al (27)
108g of Ag (108)