Solubility of any salt can be determined from_______________?
Solubility of any salt can be determined from_______________?
A. Ka
B. Kb
C. Kc
D. Ksp
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Which one is true about isotope ?
Which one is true about isotope ?A. Same number of neutrons
B. Same mass number
C. Same physical properties
D. Same chemical propertiesFor the generation of biogas, the materials commonly used are__________?
For the generation of biogas, the materials commonly used are__________?A. Animal wastes
B. Forest residues
C. Aquatic plants
D. None of theseBiogas typically refers to a gas produced by breakdown of organic matter in the absence of oxygen. Organic waste such as dead plant and animal material, animal feces, and kitchen waste can be converted into a gaseous fuel called biogas. Biogas originates from biogenic material and is a type of bio fuel. Biogas is produced by the anaerobic digestion or fermentation of biodegradable materials such as biomass, manure, sewage, municipal waste, green waste, plant material, and crops. Biogas comprises primarily methane (CH4) and carbon dioxide (CO2) and may have small amounts of hydrogen sulphide (H2S), moisture and siloxanes.
Benzene gives mainly_________?
Benzene gives mainly_________?A. Addition reaction
B. Substitution reactions
C. Halogenation
D. All of theseenzene is much more stable than expected.
The extra stability means that benzene will less readily undergo addition reactions. In benzene, the π-electrons are delocalised and makes the structure more stable. Thus, benzene does not give addition reactions because of resonance stabilisation.
The more loosely held electrons are open to attack by electrophiles. Hence, the characteristic reaction of benzene is electrophilic substitution.
Example: Nitration and Suphonation of Benzene. So it does not undergo Elimination reaction.Molecular orbital which have higher energy than atomic orbitals is called___________________?
Molecular orbital which have higher energy than atomic orbitals is called___________________?A. Bonding molecular orbital
B. Antibonding molecular orbital
C. Hybrid orbital
D. Super atomic orbitalWhich has maximum oxidation number ?
Which has maximum oxidation number ?A. N
B. Cr
C. S
D. MnWhich has the minimum freezing point ?
Which has the minimum freezing point ?A. One Molal NaCI
B. One molal KCI solution
C. One molal CaCI2
D. One molal urea solution