Which of the following frequency would be suitable for the beyond the horizon communication using sky waves?

A uniform wire of resistance 12 \( \Omega \) is cut into three pieces in the ratio of length 1 : 2 : 3. Now the three pieces are connected to form a triangle. A cell of emf 8 V and internal resistance 5 \( \Omega \) is connected across the highest of the three resistors. The current through the circuit is:

When a semiconductor is doped with a donor impurity, the number of _______

In the electromagnetic spectrum, the visible spectrum lies between :

The angular momentum of an electron moving in the circular path of diameter D in a uniform magnetic field \( B_0 \) is:

A polythene bag rubbed with a woollen jersey is found to have a negative charge of \( 3 \times 10^{-7} \text{ C} \). The number of electrons transferred from woollen jersey to the polythene would be :

Which of the following spectral series is found in the visible region of the hydrogen spectrum ?

Two cells of emf \( E \) and \( 2E \) with internal resistances \( r \) and \( 3r \), respectively are connected in parallel. The emf and internal resistance of the combination is:

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

Which one of the following hormones is essential for maintenance of the endometrium?

If \(R=\left\{(x, y) \mid x, y \in Z , x^2+y^2 \leq 4\right\}\) is a relation in \(Z\), then domain of \(R\) is :

Match List I with List II

LIST I	LIST II
A. Funnel-shaped part of oviduct, closer to the ovary	I. Isthmus
B. The last part of the oviduct	II. Ampulla
C. Finger-like projections at the edges of funnel shaped part of the oviduct	III. Infundibulum
D. Broad and middle part of the oviduct	IV. Fimbriae

Choose the correct answer from the options given below:

If last year, there were 80 lotus plants in a lake. Then, 16 new lotus plants were added through reproduction and the current population is 96 now. The birth rate of lotus plant is