Reaction of phenol with chloroform in the presence of sodium hydroxide gives salicylaldehyde. The reaction is known as

Vitamin B12 is a coordination compound of _______

Read the passage carefully and answer the questions
The speed at which a chemical reaction takes place is called the rate of reaction. The rate of reaction depends on various factors like concentration of the reactants, temperature, etc. The relation between the rate of reaction and the concentration of reacting species is represented by the equation r = k[A]^x[B]^y, where x and y are the order of the reaction with respect to the reactants A and B, respectively. The overall order of the reaction is x + y. The rate of reaction can also be increased by the use of a catalyst which provides an alternate pathway of lower activation energy. It increases the rate of forward and backward reaction to an equal extent. It does not alter the Gibbs energy of the reaction.
The rate law of a reaction is given by r = k[CH₃OCH₃]^3/2. If the pressure is measured in bar and time in minutes, then the unit of rate constant will be

Which of the following is not caused due to deficiency of hormones?

Since Physisorption arises mainly because of van der Waals forces, it means adsorption is:
(pick the incorrect option)

Graphite is a good conductor of electricity due to the presence of -

Glucose reacts with Tollen's reagent (ammoniacal silver nitrate) due to the presence of

Two particles \( P_1 \) and \( P_2 \), having equal charges accelerated by the same potential difference enter a region of uniform magnetic field and describe circular paths of radii \( R_1 \) and \( R_2 \), respectively. The ratio of the mass of \( P_1 \) to that of \( P_2 \) will be

A parallelogram is constructed on the vectors \(\vec{a}=3 \vec{\alpha}-\vec{\beta}, \vec{b}=\vec{\alpha}+3 \vec{\beta}\). If \(|\vec{\alpha}|=|\vec{\beta}|=2\) and the angle between \(\vec{\alpha}\) and \[\vec{\beta}\] is \(\frac{\pi}{3}\), then length of the diagonal of the parallelogram is:

Choose the correct match. '+' for beneficial interaction '-' for detrimental and 'O' for neutral effect.

LIst - I		LIst - II
Species A	Species B	Name of Interaction
(A) +	+	(I) Competition
(B) +	-	(II) Mutualism
(C) -	-	(III) Amensalism
(D) -	0	(IV) Predation

Choose the correct answer from the options given below:

The number of all possible matrices of order \(2 \times 2\) with each entry ' \(a\) ', ' \(b\) ' or ' \(c\) ' is :

For a full wave rectifier, if the input frequency is 50 Hz, the output frequency will be:

Camphor in nitrogen gas is a type of solution: