Assertion (A): The orbitals having equal energy are known as degenerate orbitals.
Reason (R): The three 2p orbitals are degenerate is the presence of external magnetic field.
Codes:
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true but R is not the correct explanation of A
(c) A is true but R is false
(d) Both A and R are false

Assertion: The ash produced by burning paper in air is lighter than the original mass of paper.
Reason: he residue left after combustion of a chemical entity is always lighter
Codes:
(a) Both assertion and reason are correct and reason is the correct explanation for assertion.
(b) Both assertion and reason are correct but reason is not the correct explanation for assertion
(c) Assertion is true but reason is false.
(d) Both assertion and reason is false.

Assertion: Two mole of glucose contains 12.044 x 10²³ molecules of glucose
Reason: Total number of entities present in one mole of any substance is equal to 6.02 x 10²²
(a) both assertion and reason are true and the reason is the correct explanation of assertion
(b) both assertion and reason are true but reason is not the correct explanation of assertion
(c) assertion is true but reason is false
(d) both assertion and reason are false

Which of the following is aliphatic saturated hydrocarbon?

What is the hybridisation state of benzyl carbonium ion ?

The IUPAC name of  is ____________

The equilibrium constants of the following reactions are:

The equilibrium constant (K) for the reaction ;
\({ 2NH }_{ 3 }+5/2{ O }_{ 2 }\overset { K }{ \rightleftharpoons } 2NO+{ 3H }_{ 2 }{ O },\) will be

The oxidation number of carbon in CH3 - CH₂OH is _______________.

Which of the following possess almost same properties due to lanthanide contraction?

Which of the following metal is not in liquid state?

Consider the following statements.
(i) d-block elements show variable oxidate states.
(ii) Mostly d-block elements form colourless compounds.
(iii) Mostly d-block elements are diamagnetic due to paired electrons.
Which of the above statement is/are not correct?

Which of the following statement is incorrect?

Which of the following factor decreases across the period?

Atomicity of nitrogen is __________.

Which of the following set of quantum number is possible?

If the energy of an electron in the second Bohr orbit of H-atom is -E, what is the energy of the electron in the Bohr's first orbit?

The chemical that is added to water in order to remove temporary hardness is ____________

The characteristic feature of orderly arrangement of molecules belongs to ______________.

Consider the following statements
i) Matter possesses mass.
ii) 22-carat gold is a mixture.
iii) Dry ice is a compound.
Which of the following statement(s) given above is/ are correct?

Law of triad was unable to explain for the element

Which of the following statement (s) about the Modern Periodic Table is are incorrect
i. The elements in the Modern Periodic Table are arranged on the basis of their decreasing atomic number.
ii. The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic masses.
iii. Isotopes are placed in adjoining group (s) in the Periodic Table.
iv. The elements in the Modern Periodic Table are arranged on the basis of their increasing atomic number.

Identify the correct statements with reference to the given reaction
P₄ + 3OH^- + 3H₂O \(\longrightarrow\) PH₃ + 3H₂PO₂^-
(i) Phosphorous is undergoing reduction only
(ii) Phosphorous is undergoing oxidation only
(iii) Phosphorous is undergoing both oxidation and reduction.
(iv) Hydrogen is undergoing neither oxidation nor reduction.

The variation of volume V, with temperature T, keeping pressure constant is called the coefficient of thermal expansion ie \(\alpha =\frac { 1 }{ V } { \left( \frac { \partial V }{ \partial T } \right) }_{ P }\) For an ideal gas a is equal to ___________

The oxidation number of oxygen in O₂ is__________

The maximum number of electrons in a sub shell is given by the expression _____________