Mercury cell used in hearing aid devices contains anode comprising of

Which isomerism is shown by the following pairs ?
\(CH_3CH_2CH_2OH\) and \(CH_3CH_2OCH_3\)

The correct IUPAC name of the following organic compound is

Which of the following statements are true ?
A. Noble gases have low M.P. or B.P. due to weak dispersion forces
B. All noble gases have completely filled \(ns^2np^6\) electronic configuration
C. \(XeF_2\) and \(XeF_6\) are colourless crystalline solid
D. \(XeO_3\) has pyramidal geometry
Choose the correct answer from the options given below :

Which of following is a correct statement ?

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. They are very essential for the body. They has to be taken various diet or in the form of medicines also.
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. These must be supplied regularly in diet because they are readily excreted in urine and cannot be stored in our body.
Which vitamin is known as Riboflavin?

The integrated rate equation for a first order reaction is \(\frac{kt}{2.303} = \log R_0 - \log R_t\). The straight line graph is obtained by plotting :

Exine of pollen grains has prominent apertures where sporopollenin is absent are known as:

A thin equiconvex lens of radius of curvature R made up of glass \( (\mu_g = 1.5) \) is dipped in water \( (\mu_w = 1.3) \). Its focal length in water is:

In a binomial distribution, the probability of getting a success is \(\frac{1}{3}\) and the standard deviation is 2 . Then its mean is :

A line through the points \(A(3,4,1)\) and \(B(5,1,6)\) is drawn.
Direction cosines of the line passing through the points \(A\) and \(B\) are:

A circular loop of area \( A = 0.01 \text{ m}^2 \) carrying a current of \( I = 10 \text{ A} \), is held in a magnetic field of \( B = 0.1 \text{ T} \) parallel to the plane of the loop. The torque acting on the loop is-

In a radioactive decay, neither the atomic number nor the mass number changes. Which of the following is emitted in the decay?