Question : At room temperature and atmospheric pressure, ______ has a density of 1.87 kg/m3, which is 1.5 times heavier than air and exists as a liquid below the critical temperature of 31°C.
Option 1: carbon dioxide
Option 2: nitrogen
Option 3: hydrogen
Option 4: lithium
Correct Answer: carbon dioxide
Solution : The correct option is carbon dioxide.
At room temperature and atmospheric pressure, carbon dioxide has a density of about 1.87 kg/m³, making it approximately 1.5 times heavier than air. It exists as a gas at room temperature but can become a liquid below its critical temperature of 31.1°C and pressure of 73.8 atmospheres.
Application | Eligibility | Selection Process | Result | Cutoff | Admit Card | Preparation Tips
Question : Which of the following substances is used as a substitute for chlorine in bleaching?
Option 1: Ethanal
Option 2: Liquid carbon dioxide
Option 3: Hydrogen peroxide
Option 4: Tetrachloroethene
Question : Which among the following gases is also known as ‘Laughing Gas’?
Option 1: Sulphur dioxide
Option 2: Nitrogen oxide
Option 3: Carbon dioxide
Option 4: Carbon monoxide
Question : Which of the following gases is used in a bulb?
Option 1: Hydrogen
Option 2: Carbon dioxide
Option 3: Carbon monoxide
Option 4: Argon
Question : Which among the following is added to commercial nitric acid to make it coloured?
Option 1: Carbon dioxide
Option 2: Sulphur dioxide
Option 3: Coloured impurities
Option 4: Nitrogen dioxide
Question : Which gas is used by chemical leaveners, such as baking powder and baking soda, to lighten and aerate baked goods?
Option 1: Nitrogen
Option 3: Helium
Option 4: Hydrogen
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile