Wood is a renewable source of energy. However, a tree usually takes more than 15 years to mature. Thus replenishment of wood takes a long time. Falling of trees on a large scale also causes depletion of foreest leading to environmental .....

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When the wheel of the bicycle rotates, it causes the head of the dynamo to rotate, which in turn rotates the permanent magnet. Thus, the magnetic flux passing through the coil changes and an e.m.f. is induced in it.  This shows that dynamo .....

Rana regime was an autocratic family rule. Ranas were all in all in every sector in the country. They have control over the power, resources and the means of the country. This ruling system has the following positive effects: - Muluki Ain was .....

 I)   It causes the head of the dynamo to rotate fast, which in turn rotates the permanent magnet.  II)   An e.m.f. is induced in it which is D.C. in nature. III)  Brightness of bulb increases finally.   .....

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Genotype means genetic makeup (combination of alleles) of an organism. Here, according to the figure, Genotype ratio: .....

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Someone stole my pen yesterday. The passive sentence above is in simple past tense. The active structure of simple past tense is Subject + V2 + Object. Thus, the passive structure above should be changed into the active .....

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Consider an ideal cut gem. When the light is incident, it refracts inside and travels through the lattice. At the surface which separates air & diamond media, the incident angle is very well above the critical angle and simultaneously the .....

In the figure, the angle of incidence of the light ray is 510 , which is greater than the critical angle. Here, no refraction takes place. Instead, all the light is reflected back into the denser material ( i.e.water). This is .....

We find the history of Nepal predating the birth date of Prithvi Narayan Shah. The word Nepal may have been derived from the Sanskrit word " Nepalaya" meaning footstep of the mountain. Similarly, Nepal may have been derived from the .....

Two differences between producers and consumers are as follows:   Producers Consumers 1. They can prepare food for themselves by process called photosynthesis. 2. They are also known as autotrophs.  For .....

Propene has the chemical formula C3H6. Here, propene consists of one carbon-carbon double bond. Hence, propene is an unsaturated .....

The boy said that he had lost his pen the previous day. Things to be considered: - said is no changed if there is only said. - that is used as a connective because the reported speech is in the statement sentence. - change of the pronouns(I and .....

Zygote is a diploid cell (a cell that contains two sets of chromosomes) formed by the fusion of male gamete (sperm) and female gamete .....

Atomic structure of potassium is given .....

2. Plastid: The plastid is a major organelle found in the plant cell. Chloroplast is the most common type of pigment. It consists of green pigment called chlorophyll, which uses light energy from the sun to make food .....