Which one of the following elements is found in the free state in nature?
What is the total no. of rare earth metals:
Let n(A) denotes the number of element in set A.if n(A)=P and )B)=q, then how many ordered pairs(a,b) are the with aεA and bεB?
RNA lacks the nitrogen base of
A precipitate is formed if the ionic product is __________?
The specific conductance of 0.01 M aqueous solution of acetic acid is 1. 63 x10-2 S m-1 and the molar conductance at infinite dilution is 390.7x10-4 S m2 mol-1.Calculate the degree of dissociation of the acetic acid solution?
Evaluate ∫cos2 xdx_________
Earth’s atmosphere is richest in
Electron belongs to the family of
Calculate the Reynold’s number for a liquid of density 1 g/cm3, viscosity 8 x 10-4 Pa.s flowing at 0.5 m/s through a pipe of diameter 4 cm?
Identify the product of the following reaction:
Example of an ambident nucleophile is
Electrophilic halogenation of phenol does not require catalyst because
During the adsorption of gas on the surface of solid, which of the following is true?
Amino acids generally exist in the form of Zwitter ions.
The hybridization of nitrogen in diethyl amine is
Which of the following statement is true for aqueous solution of 0.1 M urea, 0.2 M glucose nad 0.3 M sucrose
When the valence d orbitals of the central metal ion in tetrahedral complex are split in energy levels in CFT, which orbitals are raised to higher energy?
How many enolizable hydrogens are there in the compound 2-methylcyclohex-2- en -1 -one?