Chemistry-
General
Easy
Question
In an electrochemical cell, if EO is the emf of the cell involving n mole of electrons, then is
The correct answer is:
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Given that = 218 kJ/mol, express the H-H bond energy in kcal/mol
Given that = 218 kJ/mol, express the H-H bond energy in kcal/mol
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The value of is
The value of is
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is equal to
is equal to
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lim is
lim is
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is
is
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If , then x=0
If , then x=0
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A class contains 3 girls and four boys. Every Saturday five students go on a picnic, a different group of students is being sent each week. During the picnic, each girl in the group is given a doll by the accompanying teacher. All possible groups of five have gone once, the total number of dolls the girls have got is:
A class contains 3 girls and four boys. Every Saturday five students go on a picnic, a different group of students is being sent each week. During the picnic, each girl in the group is given a doll by the accompanying teacher. All possible groups of five have gone once, the total number of dolls the girls have got is:
Maths-General
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Five balls of different colours are to be placed in three boxes of different sizes. Each box can hold all five balls. The number of ways in which we can place the balls in the boxes ( order is not considered in the box) so that no box remains empty is
Five balls of different colours are to be placed in three boxes of different sizes. Each box can hold all five balls. The number of ways in which we can place the balls in the boxes ( order is not considered in the box) so that no box remains empty is
Maths-General
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If the equations x2+ax+b=0 and x2+bx+a=0 have exactly one common root, then the numerical value of a + b is
If the equations x2+ax+b=0 and x2+bx+a=0 have exactly one common root, then the numerical value of a + b is
Maths-General