Which types of bonds or interactions are found in the β-helix of protein?

Osmotic pressure is the pressure that stops the flow of a solvent and is related to the volume as:

In the following sequence of reaction: \(CH _3 Br \xrightarrow{ KCN } A \xrightarrow{ H _3 O ^{+}} B \xrightarrow{ LiAH _4 / \text { ether }} C\)
The end product \((C)\) is

what is Mohr's salt colour ?

Question based on following passage :
Adsorption is the process of attracting and retaining the adsorbate molecules on the surface of adsorbent. It is of two types i.e. Physisrption and chemisorption. To increase the rate of reaction, the substance called 'catalyst' is added. Promotors enhance the activity of catalyst while poison decrease the catalyst activity. Solutions may be true solution, suspension and colloids. Colloids are heterogenous but quite stable. On the basis of nature of interaction, colloids may be Lyophilic or Lyophobic. On the basis of type of dispersed phase particles, there may be multimolecular colloids, macromlecular colloids and associated colloids. The congulation of colloids may be done by boiling, dialysis or by mixing oppositely charged sols.
The substances which behave as normal electrolyte at low concentration but become colloids at higher concentration, are known as :

Ethanoic acid can be converted into ethanol using reagent

Which of the following amine forms a stable diazonium salt?

Arrange the given organisms involved in a food chain in correct sequence ?
(A) Fish
(B) Phytoplankton
(C) Man
(D) Zooplankton
Choose the correct answer from the options given below:

If \(A=\left[\begin{array}{lll}2 & -3 & 4\end{array}\right], B=\left[\begin{array}{l}3 \\ 2 \\ 2\end{array}\right]\)
\(X=\left[\begin{array}{lll}1 & 2 & 3\end{array}\right], Y=\left[\begin{array}{l}2 \\ 3 \\ 4\end{array}\right]\)
then \(A B+X Y=\)

Select the incorrect statement(s)
A. Surface active agents like soaps and synthetic detergents form micelles in water.
B. Soaps are emulsifying agents.
C. \(C _{17} H _{35}\) (hydrocarbon) and - COO (Carboxylate) part of stearate ion \(\left( C _{17} H _{35} COO ^{-}\right)\)both are hydrophobic.
D. Surfactants are basic in nature.
Choose the most appropriate answer from the options given given below:

The energy equivalent of 5 g of substance is

If \( \mu_0 \) is the permeability and \( \epsilon_0 \) is the permittivity of free space, then the velocity of light (c) is:

Two ropes are tied along the two diagonals of a cubic room. Ropes are inclined to each other at :