Mathematics>Algebra>Sets>Types of Sets

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Which type of cooperative society provides loans to its members at reasonable interest rates?

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Important Questions on Sets

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Mathematics>Algebra>Sets>Types of Sets

Two finite sets respectively have

x

and

y

number of elements. The total number of sub sets of the first is

56

more than the total no. of sub sets of the second. The value of

x, y

are respectively __________

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Mathematics>Algebra>Sets>Types of Sets

Which of the following is an empty set?

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Mathematics>Algebra>Sets>Types of Sets

The set of cubes of natural numbers is

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Mathematics>Algebra>Sets>Types of Sets

Select the mismatch:

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Mathematics>Algebra>Sets>Types of Sets

A homonuclear diatomic gas molecule shows

2

-electron magnetic moment. The one-electron and two-electron reduced species obtained from above gas molecule can act as both oxidising and reducing agents. When the gas molecule is one-electron oxidised the bond length decreases compared to the neutral molecule. The gas molecule is

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Mathematics>Algebra>Sets>Types of Sets

Mycorrhizae are the example of:

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Mathematics>Algebra>Sets>Types of Sets

The following Venn diagram indicates

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HARD

Mathematics>Algebra>Sets>Types of Sets

Let

a > 0, a \neq 1

. Then, the set

S

of all positive real numbers

b

satisfying

(1 + a^{2}) (1 + b^{2}) = 4 a b

is

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Mathematics>Algebra>Sets>Types of Sets

What is the actual volume occupied by water molecules present in

20 {cm}^{3}

of water?

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Mathematics>Algebra>Sets>Types of Sets

Let

A = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} .

Then the number of subsets of

A

containing two or three elements is

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Mathematics>Algebra>Sets>Types of Sets

Which of the following show maximum bond-order?

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Mathematics>Algebra>Sets>Types of Sets

Bond order of

{He}_{2}, {He}_{2}^{+}

and

{He}_{2}^{2 +}

are respectively

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Mathematics>Algebra>Sets>Types of Sets

Consider the following species:

(i)

O_{2}^{2 -}

(ii)

C O^{+}

(iii)

O_{2}^{+}

Among the following, sigma bond alone is present in -

HARD

Mathematics>Algebra>Sets>Types of Sets

What is meant by bonding and antibonding molecular orbitals? Give the number of electrons which occupy the bonding orbitals in

{H_{2}}^{+}, H_{2}

and

{He}_{2}^{+}

.

EASY

Mathematics>Algebra>Sets>Types of Sets

The number of anti-bonding electron pairs in

O_{2}^{- 2}

molecular ion on the basis of molecular orbital theory is. (Atomic number of

O

is

8

)

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Mathematics>Algebra>Sets>Types of Sets

What are the conditions for combination of atomic orbitals? Which species of

H_{2}

,

H_{2}^{+}

and

H_{2}^{-}

are paramagnetic and why?

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Mathematics>Algebra>Sets>Types of Sets

Give the molecular orbital energy diagram for oxygen molecule and account for its paramagnetic property.

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Mathematics>Algebra>Sets>Types of Sets

In forming (i)

N_{2} ⟶ N_{2}^{+}

and (ii)

O_{2} ⟶ O_{2}^{+}

; the electrons respectively are removed from

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Mathematics>Algebra>Sets>Types of Sets

The excited electronic state of

{H e}_{2}

does not have

HARD

Mathematics>Algebra>Sets>Types of Sets

What information does M.O. theory provide for

O_{2}, O_{2}^{+}, O_{2}^{-}, O_{2}^{2 -}

molecular species with regard to dissociation energy?