HSC Science (General) 11th Standard - Maharashtra State Board Question Bank Solutions

Match the following:

Answer in one sentence:

If an element ‘X’ has mass number 11 and it has 6 neutrons, then write its representation.

An atom of an element contains 29 electrons and 35 neutrons. Deduce the number of protons.

An atom of an element contains 29 electrons and 35 neutrons. Deduce the electronic configuration of that element.

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Gum in water is an example of ______.

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In Haber process of production of ammonia K₂O is used as ______.

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Fruit Jam is an example of ______.

The equlilibrium, \[\ce{H2O_{(l)} <=> H+_{( aq)} + OH-_{( aq)}}\] is ______.

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For the equilibrium, A ⇌ 2B + Heat, the number of ‘A’ molecules increases if ______.

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For the equilibrium \[\ce{Cl2 (g) + 2NO(g) ⇌ 2NOCl(g)}\] the concerntration of NOCl will increase if the equlibrium is disturbed by ______

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The relation between K_C and K_P for the reaction \[\ce{A(g) + B(g) ⇌ 2C(g) + D(g)}\] is ______.

When volume of the equilibrium reaction \[\ce{C(g) + H2O(g) ⇌ CO(g) + H2(g)}\] is increased at constant temperature the equilibrium will ______.

Write the expression of K_C for following chemical reaction:

\[\ce{2SO_{2(g)} + O_{2(g)} ⇌ 2SO_{3(g)}}\]

Write the expression of K_c for the following chemical reaction.

\[\ce{N2O4(g) ⇌ 2NO_2{(g)}}\]

Differentiate irreversible and reversible reaction.

Explain Reversible reaction.

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The missing particle from the nuclear reaction is ____________

\[\ce{^27_13Al + ^4_2He -> ? + ^1_0n}\]

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The radioactive isotope used in the treatment of Leukemia is ______.

Calculate the binding energy per nucleon of \[\ce{^84_36Kr}\] whose atomic mass is 83.913 u. (Mass of neutron is 1.0087 u and that of H atom is 1.0078 u).

Explain the following.

The elements Li, B, C, Be and N have the electronegativities 1.0, 2.0, 1.5, and 3.0, respectively on the Pauling scale.