1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Statement I : Acid strength increases in the order given as HF << HCl << HBr << HI.

Statement II : As the size of the elements, F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr and HI decreases and so the acid strength increases.

In the light of the above statements, choose the correct answer from the options given below.
A
Statement I is incorrect but Statement II is true.
B
Both Statement I and Statement II are true.
C
Both Statement I and Statement II are false.
D
Statement I is correct but Statement II is false.
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Noble gases are named because of their inertness towards reactivity. Identify an incorrect statement about them.
A
Noble gases have large positive values of electron gain enthalpy
B
Noble gases are sparingly soluble in water
C
Noble gases have very high melting and boiling points
D
Noble gases have weak dispersion forces
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
In which one of the following arrangements the given sequence is not strictly according to the properties indicted against it?
A
CO2 < SiO2 < SnO2 < PbO2 : Increasing oxidizing order
B
HF < HCl < HBr < HI : Increasing acidic strength
C
H2O < H2S < H2Se < H2Te : Increasing pKa values
D
NH3 < PH3 < AsH3 < SbH3 : Increasing acidic character
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Which of the following is not correct about carbon monoxide?
A
It reduces oxygen carrying ability of blood.
B
The carboxyhemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
C
It produced due to incomplete combustion.
D
It forms carboxyhaemoglobin.
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