1
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
The decomposition of phosphine (PH3) on tungsten at low pressure is a first-order reaction. It is because the
A
rate is proportional to the surface coverage
B
rate is inversely proportional to the surface coverage
C
rate is independent of the surface coverage
D
rate of decomposition is very slow.
2
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below :
I.  (NaCl) = 52,
II. (BaCl2) = 0.69,
III. (MgSO4) = 0.22
The correct order of their coagulating power is
A
I > II > III
B
II > I > III
C
III > II > I
D
III > I > II
3
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
Boric acid is an acid because its molecule
A
contains replaceable H+ ion
B
gives up a proton
C
accepts OH$$-$$ from water releasing proton
D
combines with proton from water molecule.
4
NEET 2016 Phase 2
MCQ (Single Correct Answer)
+4
-1
AlF3 is soluble in HF only in presence of KF. It is due to the formation of
A
K3[AlF3H3]
B
K3[AlF6]
C
AlH3
D
K[AlF3H]
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