A. CaO+ SiO2——> CaSiO3
B. 2FeS+3O2——–> 2Fe+ SO2
C. FeSiO3———> FeSiO3
D. Fe2O3+ 3CO——–> 2Fe+ 3CO2
Submitted by: Muhammad Ali Kunbhar
Related Mcqs:
- A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?
A. 74% Fe
B. 75% Fe
C. 77% Fe
D. 78% FeSubmitted by: Muhammad Ali Kunbhar
- In which of the following type of reactions energy of reactant is greater than energy of product________________?
A. endothermic
B. exothermic
C. unpredictable
D. same - Which of the following reactions may be assoclated with aldehyde and ketone ?
A. nucleophile addition
B. polymerization
C. oxidation
D. all of the above - Which of the following do not give aldol condensation reactions ?
A. formaldehyde
B. acetaldehyde
C. diemthyl ketone
D. propionaldehyde - In a closed vessel, a gas is heated from 300K to 600 K. The kinetic energy becomes__________?
A. Double
B. Same
C. Half
D. Four timesSubmitted by: Muhammad Ali Kunbhar
- Across short period the melting and boiling point increase upto __________________?
A. IIIA group
B. IVA group
C. VA group
D. VIA group - A substance having very high vapour pressure at its melting point on heating will show_______________?
A. Melting
B. Sublimation
C. Decomposition
D. Condensation - The melting points and boiling points upto meddle of 3d- series ____________________?
A. increases
B. decreases
C. remain same
D. no regular trend - Melting points of VII-A group elements down the group ____________________?
A. Increase
B. Decrease
C. Remain constant
D. No regular trend - Which one of the followings possesses melting point below 0°C?
A. Nitrogen
B. Phosphorus
C. Carbon
D. Bismuth
