P-1 Metallurgy — Science STD 10 — Question

Sketch, labell and classify: star fish

Draw schematic of power plant based on natural gas and answer the following questions:
i. At which place natural gas power plant is situated in Maharashtra?
ii. How is pollution reduced in natural gas based power plant?
iii. Give two examples of eco-friendly electricity process.

5 cm high object is placed at a distance of 10 cm from a converging lens of focal length of 20 cm. Determine the position, size and type of the image.

Write the equations for the reactions of:

1. Magnesium with dilute hydrochloric acid.
2. Aluminium with dilute hydrochloric acid.
3. Zinc with dilute hydrochloric acid.
4. Iron with dilute hydrochloric acid.

Name the products formed in each case. Also indicate the physical states of all the substances involved.

State the general properties of ionic compounds.
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Write any three general properties of ionic compounds.

Name two common sexual diseases. What are their symptoms?

Observe the following diagram and answer the questions. (Practice Activity Sheet – 1)
(a) Construction of which equipment does the following diagram show?
(b) On which principle does this equipment work?
(c) According to which law does the coil ABCD rotate?
(d) Write the law in your own words.
(e) Where is this equipment used?

Compounds such as alcohol and glucose also contain hydrogen but are not categorised as acids. Describe an activity to prove it.

Explain: Saving energy is the need of the hour.