A. Zeolites
B. Sulphonides
C. Lime
D. Nitrates
Submitted by: Rashid Mehmood
Related Mcqs:
- Permanent hardness of water is due to the presence of __________?
A. Sodium bicarbonate
B. Calcium sulfate
C. Calcium bicarbonate
D. None of theseSubmitted by: Mirza Musawer Jamil
- Permanent hardness of water may be removed by the addition of___________?
A. Sodium Carbonate
B. Alum
C. Potassium Permanganate
D. LimeSubmitted by: Warraich
- Permanent hardness of water can be removed by adding __________?
A. Chlorine
B. Washing soda
C. Bleaching powder
D. None of theseSubmitted by: Fahad Mehsud
- Which of following metals can be displaced by all other metals from its solution ?
A. Ag
B. A
C. Au
D. Cu - _____________ surfactants perform well over a wide range water hardness and PH?
A. Anionic
B. Cationic
C. Nonionic
D. NeutralSubmitted by: Muhammad Ali Kunbhar
- Any process of chemical decay of metals due to the action of surrounding medium is called__________________?
A. activation
B. enameling
C. corrosion
D. coating - Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?
A. Smaller electronegativity of alkali metals
B. Smaller ionic radius of these metals
C. De-excitation of electrons from higher energy levels to low energy level
D. Excitation of electrons from low energy levels to higher energy levels - Second ionization potential of alkali metals are very high due to_______________?
A. being s-block elements
B. inert gas configurations
C. ns1 electronic configuration
D. being metals - Calcium sulphate is known as__________?
A. Epsom salt
B. Gypsum salt
C. Blue vitriol
D. Potash alumSubmitted by: ABDUL HAYEE
- The compound which is added to leaded gasoline to save engine from lead oxide and lead sulphate deposits is__________________?
A. Ethylene iodide
B. Ethylene bromide
C. Ethylene chloride
D. Ethylene fluoride
