Low concentration of oxygen in the blood and tissues of people living at high altitude is due to :

Match the catalysts given in List - I with the process catalyzed by them given in List - II

List - I (Catalyst)	List - II (Process)
(A) Ni in presence of Hydrogen	(I) Ziegler Natta Catalyst
(B) Finely divided iron	(II) Vegetable oil to ghee
(C) \(TiCl _4+ Al \left( CH _3\right)_3\)	(III) Sandmeyer reaction
(D) \(Cu _2 Cl _2\)	(IV) Haber's process

Choose the correct answer from the options given below:

Read the passage carefully and answer
Carbohydrates are essential for both plants and animals. Some common examples of carbohydrates are glucose, fructose, sucrose, glycogen, cellulose and starch. They form a major portion of our food. Honey has been used for a long time as an instant source of energy in Ayurvedic medicine. Carbohydrates are used as storage molecules in both plants and animals. The cell wall of bacteria and plants is made of cellulose. We use cellulose in the form of wood for making furniture and as cotton fiber for clothing. They also provide raw material for textiles, paper, lacquers, and breweries. Carbohydrates are classified as Monosaccharides, Oligosaccharides and Polysaccharides on the basis of their behavior towards hydrolysis. Monosaccharides cannot be hydrolyzed further to simpler units whereas oligosaccharides can yield 2-10 units of monosaccharides on hydrolysis. Polysaccharides, which are non-sugars yield a large number of monosaccharide units on hydrolysis.
Answer the following questions about carbohydrates:
The sugar having ẞ-glycosidic linkage is

Lactose on hydrolysis gives:

An oxidation of phenol with chromic acid produces

The strongest oxidising and reducing agents respectively are :

Which of the following are fat soluble vitamins :
(A) vit A
(B) vit B
(C) vit D
(D) vit E
(E) vit K
Choose the \textbf{correct} answer from the options given below :

Read the following passage given below and answer the question.
Production of electricity by thermal plants is not very efficient method. It is now possible to make cells in which reactants are fed continuously to the electrodes and products are also removed continuously. One of the most successful fuel cells is hydrogen fuel cell.
Which of the following statement is correct regarding hydrogen fuel cells?

Match List I with List II

LIST I	LIST II
A. Dominant trait of pod colour in garden pea	I. Polygenic traits
B. The physical association of two genes on a chromosome	II. Pleiotropy
C. The traits generally controlled by three or more genes	III. Yellow
D. When a single gene exhibit multiple phenotypic expression	IV. Linkage
	V. Green

Choose the correct answer from the options given below:

The electrostatic potential at a point on the surface of a charged spherical conducting shell of radius 10 cm is 120 V. The electric potential at a distance of 5 cm from the centre of the shell is:

To form n-type semiconductor from a pure semiconductor, the impurity to be added is

\(\text{Ni}^{2+}\) in \([\text{NiCl}_2(\text{H}_2\text{O})_4]\) and \(\text{Fe}^{3+}\) in \([\text{Fe}(\text{CN})_6]^{3-}\) are called:

Excess of Lead from human body can be removed by using which of the following chelating agents?