Which one of the following binary liquid mixture exhibit positive deviation from Raoult's law?
Carbon disulphide-acetone
Chloroform-acetone
Bromobenzene-chlorobenzene
Benzene-toluene
The standard electrode potentials of Zn and Ni respectively are - 0.76 V and - 0.25 V. Then the standard emf of the spontaneous cell by coupling these under standard conditions is
+1.01 V
-0.51 V
+0.51 V
+0.25 V
How many moles of platinum will be deposited on the cathode when 0.60 F of electricity is passed through a 1.0 M solution of Pt4+?
0.60 mol
0.15 mol
0.30 mol
0.45 mol
The half-life period of a first order reaction having rate constant k = 0.231 × 10-10 s-1 will be
32 × 1010 s
2 × 1010 s
3 × 1010 s
2 × 10-10 s
For the reaction X → Y, the concentrations of 'X' are 1.2 M, 0.6 M, 0.3 Mand 0.15 M at 0, 1, 2 and 3 hours respectively. The order of the reaction is
zero
half
one
two
List I contains the type of colloid while List II contains the examples.
List I | List II |
A. Sol | p. Dust |
B. Aerosol | q. Cheese |
C. Gel | r. Soap lather |
D. Foam | s. Plant cell fluid |
Choose the correct match.
A - s; B - r; C - p; D - q
A - s; B - p; C - q; D - r
A - r; B - s; C - q; D - p
A - r; B - p; C - s; D - q
Glycerol can be separated from spent-lye in soap industry by
crystallisation
sublimation
differential extraction
chromatography
C.
differential extraction
Glycerol can be separated from spent-lye in soap industry by distillation under reduced pressure.
Which one of the following is an allylic halide?
2-chlorobutane
Chloroethene
3-bromopropene
2-chlorotoluene