Questions

Two chemicals mixed at room temperature react slowly. Suggest two ways to complete the reaction at a faster rate.

Explain about monohybrid cross making a filial chart showing the result obtained by cross-pollination followed by self-pollination of the rounded seeded pea plant and wrinkled seeded pea plant. What is the phenotypic ratio in the second filial generation?

How will you prepare a video on the topic “a good netizen” in your computer?

Digital technology has strengthened the relationship with humans over the past few years. This has risked the mental health as well as the physical health of children. What are some measures you can adopt for your improved sleep, mental health, and stress after interaction with technology?

You are going to extract Zinc from Zinc Sulphide. Will you carry out the oxidation of ore? Support your answer with an appropriate reason. Also, which oxidation method will you use if your answer is ‘yes’?

A part of the modern periodic table is given below. Which of the following elements in this period is the most electropositive? Why?

| Li | Be | B | C | N | O | F | Ne |

Discuss the concept of closed universe.

The number of secondary windings in the coil of a transformer used in a microwave oven is 12 times the number of windings in the primary coil. If it is connected to a source of 220 V, what is the secondary voltage obtained from the transformer?

A dairy owner put a lactometer into milk brought to sell by a farmer to his shop. The narrow stem of the lactometer submerged completely into the milk. What conclusion did the dairy shopkeeper get from it?

Write down the factors that influence acceleration due to gravity.