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Nitrogen Family



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Q1. What is the ratio of the molar heat at constant pressure to the molar heat at constant volume for a noble gas?

(a) 1.5
(b) 1.67
(c) 1.73
(d) 1.37

Q2. Which of the following statements is incorrect about noble gases?

(a) They are monoatomic
(b) They are colourless
(c) They are odourless
(d) They all have an outer electronic configuration of ns2np6

Q3. Which of the following noble gases is not obtained via fractional distillation?

(a) Krypton
(b) Argon
(c) Neon
(d) Helium

Q4. What are the decay products of radium?

(a) Radon and oxygen
(b) Radon and nitrogen
(c) Lanthanum and oxygen
(d) Radon and Helium

Q5. What is the half-life of radon?

(a) 10 days
(b) 4.56 days
(c) 3.82 days
(d) 5.46 days

Q6. Which of the following scientists first discovered helium in the solar spectrum during a total solar eclipse?

(a) Lord Rayleigh
(b) J N Lockyer
(c) William Ramsay
(d) Antoine Lavoisier

Q7. The main commercial source of helium is natural gas.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q8. Which of the following is the second most abundant noble gas in the atmosphere?

(a) Helium
(b) Argon
(c) Neon
(d) Krypton

Q9. Which of the following noble gases do not occur in the elemental state in the atmosphere?

(a) Helium
(b) Neon
(c) Argon
(d) Radon

Q10. Helium is the second most abundant gas in the universe.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned


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Modified 280 Year Ago Rohandavid

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Rohandavid
280 Year Ago

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