1
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
2
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
3
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.
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following?
A
$${[Cu{(N{H_3})_4}]^{2 + }}$$
B
$$Cu{(OH)_2}$$
C
$$CuC{O_3}.Cu{(OH)_2}$$
D
$$CuS{O_4}$$
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