During sulphonation of benzene H2SO4 generates the electrophile _________________?
During sulphonation of benzene H2SO4 generates the electrophile _________________?
A. HSO4-
B. SO2
C. SO3
D. H+
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Nylon is obtained by heating___________________?A. Acrylic acid
B. Epichlorohydrin
C. Vinyl chloride
D. Adipic acid with hexamethylene diaminePermanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?
Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ?A. Zeolites
B. Sulphonides
C. Lime
D. NitratesRegular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________?
Regular coiling or zigzagging of polypeptide through hydrogen bonding is its_______________?A. Quantum structure
B. Secondary structure
C. Tertiary structure
D. Primary structureAtom cannot be divided into simple unitstheorized by________________?
Atom cannot be divided into simple unitstheorized by________________?A. Rutherford
B. Dalton
C. Bohr
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During electrolysis of Water, the product obtained at cathode is ___________?A. Hydrogen Gas &Water
B. Oxygen Gas &Water
C. Only oxygen
D. Only Water
Aamir khan HullioMixture of catalysts Cr2O3 + A?2O3 + SiO2 at 500?C are used when benzene is prepared from_______________?
Mixture of catalysts Cr2O3 + A?2O3 + SiO2 at 500?C are used when benzene is prepared from_______________?A. acetylene
B. N-hexane
C. Benzene sulphonic acid
D. Sodium benzoate