Chemistry
Grade-8
Easy
Question
Calcium carbonate reacts with strong acids like hydrochloric acid to form:
- CaCl2 and CO2
- CaCl2 and CO
- Ca2Cl2 and CO
- Ca2Cl2 and CO2
Hint:
A salt will form and gas is released. The gas is the same which we humans respire out.
The correct answer is: CaCl2 and CO2
The correct option is a)CaCl2 and CO2.
Metal carbonates react with acids to form salts, carbon dioxide and water. Calcium carbonate (CaCO3) reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl2), carbon dioxide (CO2) and water (H2O).
Related Questions to study
Chemistry
Multiple True false Statement:
(i) carbon dioxide is an important constituent of the fuels, like, coal gas, water gas.
(ii) Carbon monoxide is slightly lighter than air.
(iii) Calcium carbide is greyish black crystalline solid.
Multiple True false Statement:
(i) carbon dioxide is an important constituent of the fuels, like, coal gas, water gas.
(ii) Carbon monoxide is slightly lighter than air.
(iii) Calcium carbide is greyish black crystalline solid.
ChemistryGrade-8
Chemistry
Which of the following statement is incorrect?
Which of the following statement is incorrect?
ChemistryGrade-8
Chemistry
What are the product A and B in the following reaction:
What are the product A and B in the following reaction:
ChemistryGrade-8
Chemistry
One of the important constituents of producer gas is :
One of the important constituents of producer gas is :
ChemistryGrade-8
Chemistry
Carbon monoxide combines with blood's hemoglobin to form a compound called as _____
Carbon monoxide combines with blood's hemoglobin to form a compound called as _____
ChemistryGrade-8
Chemistry
To detect the bicarbonate present in any given sample, sample is heated. Which of the following gas is released during this reaction is used to detect bicarbonates?
To detect the bicarbonate present in any given sample, sample is heated. Which of the following gas is released during this reaction is used to detect bicarbonates?
ChemistryGrade-8
Chemistry
The compound of carbon used to soften hard water is _______.
The compound of carbon used to soften hard water is _______.
ChemistryGrade-8
Chemistry
Which of the following gas is poisonous in nature?
Which of the following gas is poisonous in nature?
ChemistryGrade-8
Chemistry
Which of the following compound is result of incomplete combustion of fuels?
Which of the following compound is result of incomplete combustion of fuels?
ChemistryGrade-8
Chemistry
The main component found in chalk and marble is.
The main component found in chalk and marble is.
ChemistryGrade-8
Chemistry
Carbon monoxide is combustible and burns with _______ flame.
Carbon monoxide is combustible and burns with _______ flame.
ChemistryGrade-8
Chemistry
What is the compound A in the following chemical reaction?
What is the compound A in the following chemical reaction?
ChemistryGrade-8
Chemistry
Which among the following does not produce carbon monoxide?
Which among the following does not produce carbon monoxide?
ChemistryGrade-8
Chemistry
Calcium carbonate occurs in nature in the form of:
Calcium carbonate occurs in nature in the form of:
ChemistryGrade-8
Chemistry
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.
The compound which is used as a grinding stone to cut and sharpen tools is:
ChemistryGrade-8
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.
