Multiple Choice QuestionsAn excess of AgNO3Â is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitate would be
0.001
0.002
0.003
0.003
KMnO4 can be prepared from K2MnO4 as per reaction
The reaction can go to completion by removing OH- ions by adding
HCl
KOH
CO2
CO2
Which of the following statements about the interstitial compounds is incorrect?
They retain metallic conductivity
They are chemically reactive
They are much harder than the pure metal
They are much harder than the pure metal
Which of the following is a polar molecule?
BF3
SF4
SiF4
SiF4
B.
SF4
Symmetrical molecules are generally non-polar although they have polar bonds. This is because bond dipole on one bond is cancelled by that of the other. BF3, Â SiF4 and XeF4 being symmetrical as non-polar. SF4 is unsymmetrical because of the presence of a lone pair of electrons. Due to which it is a polar molecule.Â
The reaction by which benzaldehyde cannot be prepared?Â
 +CrO2Cl2 and CS2 followed by H3O+
 +H2 in presence of anhydrous AlCl3.
 +CO +HCl in presence of anhydrous AlCl3
 +CO +HCl in presence of anhydrous AlCl3
Which of these is not a monomer for high molecular mass silicone polymer?
MeSiCl3
Me2SiCl2
Me3SiCl
Me3SiCl
Antiseptics and disinfectants either kill or prevent the growth of microorganisms. Identify which of the following is not true.
A 0.2% solution of phenol is an antiseptic while 1% solution acts as a disinfectant
Chlorine and iodine are used as strong disinfectants
Dilute solutions of boric acid and hydrogen, peroxide are strong antiseptics
Dilute solutions of boric acid and hydrogen, peroxide are strong antiseptics
Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?
Switch
