Deep sea divers used to respirate is a mixture of - Vidyadip

MCQ

Deep sea divers used to respirate is a mixture of

A
Oxygen and argon
✓
Oxygen and helium
C
Oxygen and nitrogen
D
Oxygen and hydrogen

✓

Answer

Correct option: B.

Oxygen and helium

b
(b) An oxygen-helium mixture is used artificial respiration in deep sea diving instead of air because nitrogen present in air dissolves in blood under high pressure when sea diver goes into deep sea. When he comes to the surface, nitrogen bubbles out of the blood due to decrease in pressure, causing pains. This disease is called “bends”.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Addition of $OsO_4$ to cyclopentene would give a product which is

$B{\left( {OH} \right)_3} + NaOH \to NaB{O_2} + Na\left[ {B{{\left( {OH} \right)}_4}} \right] + {H_2}O$

How can this reaction is made to proceed in forward direction?

Effective atomic number of iron in brown ring complex is

Which of the following has the most acidic proton

Which one of the statements given below concerning properties of solutions, describes a colligative effect

Compound $A\,(C_9H_{10}O)$ shows positive iodoform test. Oxidation of $A$ with $KMnO_4/KOH$ gives acid $B(C_8H_6O_4)$. Anhydride of $B$ is used for the preparation of phenolphthalein. Compound $A$ is

Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give anhydride?

If $S$ and ${K_{sp}}$ are respectively solubility and solubility product of a sparingly soluble binary electrolyte, then

From the following which group of elements easily forms cation

The activation energy for a simple chemical reaction $A \to B$ is ${E_a}$ in forward direction. The activation energy for reverse reaction