Chemistry
Grade-8
Easy
Question
Carbon dioxide is colorless and __________ gas.
- Pungent
- White colored
- Odorless
- Light-weighted
Hint:
Carbon Dioxide is a nonflammable, colorless, odorless gas.
The correct answer is: Odorless
Carbon dioxide (chemical formula CO2) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms, found in the gas state at room temperature. In the air, carbon dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas.
Carbon Dioxide (CO2)is a nonflammable, colorless, odorless gas.
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During the laboratory preparation of carbon dioxide by using marble chips and hydrochloric acid, the following steps are followed. Arrange these steps in proper order.
1. Through the mouth of the conical flask, a thistle funnel is inserted.
2. Dilute hydrochloric acid is added dropwise through the thistle funnel so that the marble chips are completely immersed in the acid.
3. A thistle funnel is inserted through one hole, and another hole, a delivery tube, is introduced.
4. Marble chips are taken in a conical flask.
During the laboratory preparation of carbon dioxide by using marble chips and hydrochloric acid, the following steps are followed. Arrange these steps in proper order.
1. Through the mouth of the conical flask, a thistle funnel is inserted.
2. Dilute hydrochloric acid is added dropwise through the thistle funnel so that the marble chips are completely immersed in the acid.
3. A thistle funnel is inserted through one hole, and another hole, a delivery tube, is introduced.
4. Marble chips are taken in a conical flask.
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Although studying English seems difficult, it’s simpler than you think.
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She loved flowers, and I always bought her flowers.
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The flight departs every morning at 7 A.M. I think.
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Identify whether the below sentence are compound sentence or not. Give your answer in 'yes' or 'no'.
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