English Medium Class 10 - CBSE Question Bank Solutions

Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?

A ray of light is travelling in a direction perpendicular to the boundary of a parallel glass slab. The ray of light ______.

Reema took 5ml of Lead Nitrate solution in a beaker and added approximately 4ml of Potassium Iodide solution to it. What would she observe?

When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.

The correct structural formula of butanoic acid is -

Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.

Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g., hydrogen. After the formation of four bonds, carbon attains the electronic configuration of ______.

Which of the following statements are usually correct for carbon compounds? These

1. are good conductors of electricity
2. are poor conductors of electricity
3. have strong forces of attraction between their molecules
4. do not have strong forces of attraction between their molecules.

Cation is formed when ______.

The I.U.P.A.C name of CH₃CH₂CH = CH₂ is?

Which of the following compounds of carbon does not consist of ions?

Which of the following statements are correct for carbon compounds?

1. Most carbon compounds are good conductors of electricity.
2. Most carbon compounds are poor conductors of electricity.
3. Force of attraction between molecules of carbon compounds is not very strong.
4. Force of attraction between molecules of carbon compounds is very strong.

Which of the following is the formula of Butanoic acid?

Which of the following statement is not correct about the magnetic field?

In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?

We should reduce the use of the plastic bags, bottles etc. because ______.

Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.

The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as ______.

If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.

In an ecosystem, herbivores represent ______.