The mass of \(\text{NaOH}\) required to make a 500 mL solution of 0.5 molarity is

Which of the following cannot be explained by the open chain structure of glucose?

The magnetic moment of \(Cu ^{2+}\) ion \(( Z =29)\) is :

Arrange the following ligands in decreasing order of field strength in spectrochemical series.
(A) Br\(^-\)
(B) H\(_2\)\(\mathrm{O}\)
(C) OH\(^-\)
(D) CO
Choose the correct answer from the options given below:

Read the passage carefully and answer the Questions
The term vitamin was coined from the word vital +amine since the earlier identified compounds had amino groups. Later work showed that most of them didn't contain amino groups, so the letter "e" was dropped and ther term vitamin is used these days.
Vitamins are classified into two groups depending upon their solubility in water or fat. Fat soluble vitamins are soluble in fat and oils but insoluble in water. They are stored in liver and adipose (fat storing) tissues. Water-soluble vitamins are soluble in water. They must be supplied regularly in the diet as they are readily excreated in urine.
Which Vitamin is known as Pyridoxine?

"Wood spirit " is

IUPAC name of the following compound is :

A plano-convex lens has focal length 0.5 m and the retractive index of the material of the lens is 1.5. The radius of curvature of the convex surface of the lens is

For a \(3 \times 3\) matrix \(A=\left[a_{i j}\right]\), whose element \(a_{i j}\) is given by \(a_{i j}=\sqrt{i^2+3 j}\), then what is element \(a_{31}\) ?

In the nuclear decay given below, the particles emitted in the sequence are:

In the below mentioned demand supply curve, identify the equilibrium point

The set of positive integers less than 50 forming the equivalence class of 6 modulo 9 is given by :

A and B throw a die alternatively till one of them gets 3 or 6 and wins the game. If B starts the game, then the probability of winning the game by A is