Multiple Choice QuestionsAssertion : Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.
Reason : The reaction between nitrogen and oxygen requires high temperature.
Both assertion and reason are correct, but the reason is not the correct explanation for the assertion
Both the assertion and reason are incorrect but the reason is not the correct explanation for the assertion.
The assertion is incorrect, but the reason is correct
The assertion is incorrect, but the reason is correct
Among the following oxoacids, the correct decreasing order of acid strength is
HOCl > HClO2>HClO3 > HClO4
HClO4>HOCl> HClO2>HClO3
HClO4>HClO3>HClO2>HOCl
HClO4>HClO3>HClO2>HOCl
Which of the following is the wrong statement?
ONCl and ONO- are not isoelectronic
O3 molecule is linear
Ozone is violet-black in solid state
Ozone is violet-black in solid state
The molecule having smallest bond angle is
NCl3
AsCl3
SbCl3
SbCl3
C.
SbCl3
On moving down the group, the size of the central atom increases and electronegativity decreases. Thus, the bond pairs of electrons tend to lie farther away from the central atoms as we move from N to Sb. Hence, bond pairs repulsion is maximum in NCl3 and minimum in SbCl3. Thus, bond angle decreases from NCl3 (maximum)to SbCl3 (minimum).
Which of the following statement is wrong?
The stability of hydrides increases from NH3 to BiH3 in group 15 of the periodic table.
Nitrogen cannot form dπ-pπ bond.
Single N - N bond is weaker than the single P - P bond.
Single N - N bond is weaker than the single P - P bond.
Which one of the following orders presents the correct sequence of the increasing basic nature of the given oxides?
Al2O3 < MgO < Na2O < K2O
MgO < K2O < Al2O3 < Na2O
Na2O < K2O < MgO < Al2O3
Na2O < K2O < MgO < Al2O3
Which of the following statements regarding sulphur is incorrect?
S2 molecule is paramagnetic.
The vapour at 200ºC consists mostly of S8 rings.
At 600ºC the gas mainly consists of S2 molecules.
At 600ºC the gas mainly consists of S2 molecules.
29.5 mg of an organic compound containing nitrogen was digested according to Kjeldahl’s method and the evolved ammonia was absorbed in 20 mL of 0.1 M HCl solution. The excess of the acid required 15 mL of 0.1 M NaOH solution for complete neutralization. The percentage of nitrogen in the compound is
59.0
47.4
23.7
23.7
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