The compound of carbon used to soften hard water is _______.

Which of the following gas is poisonous in nature?

Which of the following compound is result of incomplete combustion of fuels?

The main component found in chalk and marble is.

Carbon monoxide is combustible and burns with _______ flame.

What is the compound A in the following chemical reaction?

Which among the following does not produce carbon monoxide?

Calcium carbonate occurs in nature in the form of:

The compound which is used as a grinding stone to cut and sharpen tools is:

The correct option is c)Silicon carbide.
Silicon carbide, an artificial compound of silicon and carbon with a Mohs hardness of 9.5, is commonly used to cut softer gemstones. It is also used as a grinding stone to cut and even to sharpen tools. Diamond, the hardest natural substance, has a Mohs hardness of 10 and is used as an abrasive for cutting and polishing a variety of materials, including diamond itself.

Carbon dioxide dissolves in water to give___

Identify the pair of organic compounds from the following?

Assertion-Reason Type Questions                                                                             
Assertion (A): CO₂ is used in fire extinguishers to put off fires.  
Reason (R): It is a non-combustible gas and supports combustion.

In the laboratory preparation of carbon monoxide, hydrochloric acid is only used although sulfuric acid reacts with calcium carbonate in the same way as HCl. However, the sulfuric acid is never used because:
(i). Insoluble calcium sulfate formed during this reaction
(ii). Calcium sulfate covers the marble chips and stops the reaction.
(iii). The reaction is a highly exothermic reaction
(iv). To react both of the reactants, many temperature conditions need to be fulfilled

Match the entries of Column A with those of Column B.

When carbon dioxide reacts with sodium oxides, it gives ____

What are the products obtained from the following chemical reaction?