Which one of the following looks odd__________________?
A. H2SO4 B. KMnO4 C. H2S D. K2CrO4
Chemistry MCQs
In 1 – pentene -4- yne the carbon exhibit hybridization_________________?
A. sp3 – sp2 B. sp2 – sp C. sp2 – sp D. sp3 – sp2 – sp
When benzene is heated in air with V2O5 at 450°C yields_________________?
A. Phenol B. Maleic anhydride C. Glyoxal D. Benzoic acid
Which one of the following will be sulphonated readily ?
A. Chlorobenzene B. Toluene C. Nitrobenzene D. Benzene
When CO2 is made to react with ethy1 magnesium iodide in dry ether followed by acid hydrolysis yields______________?
A. Carboxylic acid B. Ethanoic acid C. Propanoic acid D. Butanoic acid
Ethy1 chloride on reduction in the presence of Zn/HCI produces___________________?
A. n. butane B. Ethanol C. Ethane D. Diethy1 ether
For industrial preparation of CH3CHO catalytic promoter is_________________?
A. PdCl2 B. Cu2Cl2 C. CuCl2 D. PbCl2
The mass of one mole of electron is________________?
A. 1.008 B. 0.55 C. 0.184 D. 1.637
The number of atoms in a molecule determines________________?
A. macromolecule B. macromolecule C. molecularity D. atomicity
Which element has same isotopes like palladium___________________?
A. Nickel B. Calcium C. Cadmium D. Tin