The ground state magnetic property of B2 and C2 molecules will be
B2 paramagnetic and C2 diamagnetic
B2 diamagnetic and C2 paramagnetic
Both are diamagnetic
Both are paramagnetic
PbCl2 is insoluble in cold water. Addition of HCl increases its solubility due to
formation of soluble complex anions like [PbCl3]-
oxidation of Pb(II) to PB(IV)
formation of [Pb(H2O)6]2+
formation of polymeric lead complexes
Of the following compounds, which one is the strongest Bronsted acid in a aqueous solution?
HClO3
HClO2
HOCl
HOBr
The yield of acetanilide in the reaction (100% conversion) of 2 moles of aniline with 1 mole of acetic anhydride is
270 gm
135 gm
67.5 gm
177 gm
You are supplied with 500 mL each of 2N HCl and SN HCL What is the maximum volume of 3M HCl that you can prepare using only these two solutions?
250 mL
500 mL
750 mL
1000 mL
Which one of the following corresponds to a photon of highest energy?
λ = 300 mm
v = 3 × 108 s-1
= 30 cm-1
ε = 6.626 × 10-27 J
Equilibrium constants for the following reactions at 1200 K are given
2H2O (g) 2H2 (g) + O2 (g) [K1 = 6.8 × 10-8]
2CO2 (g) 2CO (g) + O2 (g) [K2 = 1.6 × 10-6]
The equilibrium constant for the reaction?
H2(g) + CO2(g) CO (g) + H2O (g)
at 1200 K will be
0.05
20
0.2
5.0
Which of the following solutions will turn violet when a drop of lime juice is added to it?
A solution of NaI
A solution mixture of KI and NaIO3
A solution mixture of NaI and KI
A solution mixture of KIO3 and NaIO3
B.
A solution mixture of KI and NaIO3
When drop of lime juice is added to mixture of I- + IO. The following reaction take place and violet colour appears due to formation of I2.
I- + IO + H+ → I2 + H2O
What will be the normality of the salt solution obtained by neutralising x mL y (N) HCl with y mL x(N) NaOH, and finally adding (x + y) mL distilled water