‘Fritz’ is a short story written by Satyajit Ray and is about a Swiss doll whose name is Fritz.

The characters Jayanto and Shankar are friends in the story and whereas Shankar is a school teacher and the narrator of the story, Jayanto works in the editorial department of a newspaper.

 Jayanto comes across as a light hearted, fun loving person, though a bit timid and not so confident being. Shankar, on the other hand, has been shown as a strong and confident personality with sharp logical reasoning and a fearless streak.

कबीर ने अपने को दीवाना क्यों कहा है?

कबीर ने स्वयं को दीवाना इसलिए कहा है, क्योंकि वह निर्भय है। उसे किसी का कुछ भी कहना व्यापता नहीं है। वह ईश्वर के सच्चे स्वरूप को पहचानता है। वह ईश्वर का सच्चा भक्त है, अत: दीवाना है।

Phosphorus (C): 1s² 2s² 2p² 

No of unpaired electron = 2

The ominous silence was the first indication of impending disaster. The wind dropped and the sky immediately grew dark.

(a) Mycoplasma are the simplest unicellular prokaryotes.
(b) They are often called as PPLO (pleuropneumonia like organisms).
© They occur in soil, sewage, human and plants.
(d) Plasma membrane is present.
(e) Due to absence of cell wall they can change their shape easily.
(f) They lack organised nucleus, endoplasmic reticulum, plastids, mitochondria, golgi bodies, lysosomes etc.
(g) A single naked DNA duplex lies coiled in the cytoplasm.
(h) They cause several diseases such as Pneumonia in man and animals.

A diagram used to represent all possible relations of different sets. A Venn diagram can be represented by any closed figure, whether it be a Circle or a Polygon (square, hexagon, etc.). But usually, we use circles to represent each set. 

In the above figure, we can see a Venn diagram, represented by a rectangular universal set, which has two independent sets X and Y. Therefore, X and Y are disjoint sets. The two sets X and Y are represented in the circular shape. This diagram shows that set X and set Y have no relation between each other, but they are a part of universal set.

Let us consider a liquid of density ρ in a vessel as shown in figure. Let us find the pressure difference between two points A and B separated by vertical height h.

To evaluate the pressure difference between A and B, consider an imaginary cubiod of area of cross-section a of liquid with upper and lower cap passing through A and B respectively. The volume of the imaginary cylinder is,.

V=ah

Mass of liquid of imaginary cylinder is,

m = ρah

Let P₁ and P₂ be the pressure on the upper and lower face of cylinder. The different forces acting on the imaginary cylinder are:

(i) weight mg = ρahg in vertically downward direction.

(ii) Downward thrust of F₁ =P₁a on upper cap.

(iii) Upward thrust of F₂ = P₂a on lower face. As the imaginary cylinder in the liquid is in equilibrium, therefore the net force on the cylinder is zero, i.e.

Thus the pressure difference between two points separated vertically by height h in the presence of gravity is ρgh. In the absence of gravity this pressure difference becomes zero.

Minerals are important for your body to stay healthy. Your body uses minerals for many different jobs, including keeping your bones, muscles, heart, and brain working properly. Minerals are also important for making enzymes and hormones. ... You only need small amounts of trace minerals. Vitamins and minerals are considered essential nutrients—because acting in concert, they perform hundreds of roles in the body. They help shore up bones, heal wounds, and bolster your immune system. They also convert food into energy, and repair cellular damage.

A constitution is a written set of laws and fundamental principles to develop a relationship between the people and the government which comprises a number of articles about the state.

A Constitution is necessary because of the following reasons:

• It is an important law of the land. It determines the relationship of the citizens with the governments.
• It lays down principles and guidelines which are required for people belonging to different ethnic and religious groups to live in harmony.
• It specifies on how the Government would be elected and who will have the power and the responsibility to take important decisions.
• It outlines the limits on the power of the Government and tells us about the rights of the citizens.
• It expresses the aspirations of the people about creating a good society.

The word Australopithecus is derived from Latin word ‘austral’ means southern and a Greek word ‘pithekos’ which means ‘apes’. Hence, the word means southern apes (Southern Monkey). The earliest human is called so because he resembles them.

Hominids: They belonged to hominidae family and came into existence about 5.6 • mya. Their earliest fossils were excavated at Laotoli and Hader (both in Africa). It is a clear evidence that they originated in Africa. Their fossils were also found outside Africa.

• Hominoids were the subgroup of primates.
• They came into existence about 24 mya.

Characteristics

• They had smaller brain.
• They were unable to walk erect.