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Standard VII

Chemistry

Inert Gas and Their Uses

Fill in the b...

Question

Fill in the blanks by choosing the appropriate option.
The noble gases can form compounds with _(i) and (ii). The mixture of __(iii) and _(iv) is used for respiration by divers.

(i) - iodine, (ii) - oxygen, (iii) - oxygen, (iv) - argon

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(i) - fluorine, (ii) - oxygen, (iii) - helium, (iv) - oxygen

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(i) - xenon, (ii) - platinum, (iii) - argon, (iv) - krypton

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(i) - helium, (ii) - oxygen, (iii) - xenon, (iv) - argon

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Solution

The correct option is B (i) - fluorine, (ii) - oxygen, (iii) - helium, (iv) - oxygen
The noble gases can form compounds with Florine and Oxygen like $X e F_{2}, X e F_{4}, X e O_{2}$ etc....
The mixture of Helium and oxygen is used for respiration by divers.

Hence option B is correct.

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Similar questions

Q. Match column A to column B:

\begin{matrix} C o l u m n A & C o l u m n B a . N o b l e g a s & (i) C a r b o n, h y d r o g e n, o x y g e n b . G r a p h i t e & (i i) A r g o n c . C a l c i u m & (i i i) L u b r i c a n t s d . G l u c o s e & (i v) M o n o a t o m i c \end{matrix}

Which of the following are Molecules?

(i) Oxygen gas

(ii) Argon

(iii)Ammonia

(iv) Helium

(v) Water

(vi) Sugar

Which of the following exists as molecules?

(i) Oxygen gas

(ii) Argon

(iii) Ammonia

(iv) Helium

(v) Water

(vi) Sugar

Choose the most appropriate answer from the options given below :

(a) a mixture of sand and ammonium chloride can be separated by

(i) filtration

(ii) distillation

(iii) sublimation

(iv) crystallisation

(b) A pair of metalloids are

(i) Na and Mg

(ii) B and Si

(iii) C and P

(iv) He and Ar

(i) They are heterogeneous.

(ii) They are homogeneous.

(iii) They have definite molecular formulae.

(iv) They have fixed melting and boiling points.

(d) A solvent of Iodine is

(i) Water

(ii) Kerosene oil

(iii) Alcohol

(iv) Petrol

(e) Which of the gas is highly soluble in water ?

(i) Ammonia

(ii) Nitrogen

(iii) Carbon monoxide

(iv) Oxygen

Q. Question 27
The heteroatoms present in

C H_{3} — C H_{2} — O — C H_{2} — C H_{2} C l

are

(i) oxygen
(ii) carbon
(iii) hydrogen
(iv) chlorine

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

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Fill in the blanks by choosing the appropriate option.The noble gases can form compounds with ___(i)__ and __(ii)__. The mixture of ____(iii)__ and ___(iv)__ is used for respiration by divers.

The correct option is B (i) - fluorine, (ii) - oxygen, (iii) - helium, (iv) - oxygenThe noble gases can form compounds with Florine and Oxygen like XeF2,XeF4,XeO2 etc....The mixture of Helium and oxygen is used for respiration by divers.Hence option B is correct.

Fill in the blanks by choosing the appropriate option.
The noble gases can form compounds with _(i) and (ii). The mixture of __(iii) and _(iv) is used for respiration by divers.

The correct option is B (i) - fluorine, (ii) - oxygen, (iii) - helium, (iv) - oxygen
The noble gases can form compounds with Florine and Oxygen like $X e F_{2}, X e F_{4}, X e O_{2}$ etc....
The mixture of Helium and oxygen is used for respiration by divers.

Hence option B is correct.