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
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
A.
Al2O3 < MgO < Na2O < K2O
As the metallic character of element attached to oxygen atom increases, the difference between the electronegativity values of element and oxygen increases and thus the basic character of oxides increases and vice-versa. Hence the increasing correct order of basic nature is Al2O3 < MgO < Na2O < K2O.
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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