What is a one letter code of Tryptophan?

Vacancy and interstitial defects in solids are examples of :

A drop of solution (Volume \(0.05\text{ mL}\)) contains \(3.0 \times 10^{6}\) mole of \(\text{H}^{+}\) ions. If the rate constant of disappearance of \(\text{H}^{+}\) is \(1.0 \times 10^{7}\text{ mol litre}^{-1}\text{ sec}^{-1}\), how long will take \(\text{H}^{+}\) ions to disappear?

\(\text{CH}_3-\text{CH}(\text{Br}) - \text{CH}_2 - \text{CH}_3 \xrightarrow{\text{alc. KOH}} \text{A} \xrightarrow{\text{Br}_2} \text{CH}_3-\text{CH}(\text{Br}) - \text{CH}(\text{Br}) - \text{CH}_3 \text{(B)}\)
\(\text{(B)} \xrightarrow{\text{alc. KOH}} \text{CH}_3-\text{C} = \text{C} – \text{CH}_3 \text{(C)}\)
\(\text{(C)} \xrightarrow{\text{Hg}^{2+}/\text{H}^+\atop \text{H}_2\text{O}} \text{D}\)
A and D respectively are :

Which one of the following does not correctly represent the correct order of the property indicated against it?

Read the passage carefully and answer the Questions
Carboxylic acids are the earliest organic compounds isolated from nature. These are also known as organic acids but are weaker acids as compared to mineral acids. However, they are more acidic than alcohols and phenols because of greater resonance stabilization of the parent acid and its conjugate base. The acidic strength is determined by the \(K _a\), which is called the acidity constant. The greater the value of \(K _a\), the greater the tendency of the acid to ionize and hence the stronger the acid. The acidic strength of the saturated aliphatic carboxylic acid depends upon the inductive effect and its position with respect to - COOH groups. Electron-donating substituents tend to decrease whereas electron-withdrawing substituents tend to increase the acidic strength. The acidic strength of the aromatic carboxylic acid, on the other hand depends upon both the inductive effect and the resonance effect of the substituents.
\(p K_a\) of chloroacetic acid is lower than acetic acid because of

The correct IUPAC name for \(C H _{ 2 }= C H C H _{ 2 } N H C H _{ 3 }\).

A carrier wave \(C(t) = A_c \sin \omega_c t\) is amplitude modulated by modulating signal \(m(t) = A_m \sin \omega_m t\). The maximum and minimum amplitudes of the modulated wave are found to be 20 V and 5 V respectively. The modulation index is:

The probability distribution of a random variable X is given below:

x	-5	-4	-3	-2	-1	0	1	2	3	4	5
P(X)	p	2p	3p	4p	5p	7p	8p	9p	10p	11p	12p

A parallel beam of monochromatic light of wavelength 489 nm passes through a single slit of width 0.3 mm. The angular width of the central maxima is

What happens when a tertiary alcohol is heated at temperature of 443 K in presence of phosphoric acid?

The given reaction occur because :
Chlorobenzene \(\frac{\text { Conc. } HNO _3}{\text { Conc. } H _2 SO _4}\) o-Chloronitrobenzene + p-Chloronitrobenzene

Answer the question on the basis of passage given below :
A colloid is a heterogeneous system in which a substance is dispersed (dispersed phase) as fine particles in another substance called dispersion medium.
Their particle size is intermediate between that of pure solutions (less than 1 nm) and suspensions (greater than 1000 nm). They are known for interesting properties such as enormous surface area, Tyndall effect, Brownian motion etc.
They are widely used in industries and day to day life.
Some prominent uses of colloids are those in smoke precipitators, purification of water, medicines, cleansers etc.
Which of the following electrolyte exhibits maximum flocculating power in the coagulation of a positive metal hydroxide sol?