Question

17. Write any two properties of acid with example.
18. Write word equations and then balanced equations for the reaction taking place when:
(a) Dilute Sulphuric acid reacts with zinc granules.
(b) Dilute hydrochloric acid reacts with magnesium ribbon
(c) Dilute Sulphuric acid reacts with aluminum powder
(d) Dilute hydrochloric acid reacts with iron fillings.
19. What would be the consequence of a deficiency of hemoglobin in our bodies?
20. Explain Dispersion and Spectrum.
21. What are the advantages and disadvantages of using a solar cooker? Are there places where sola​

Answer 1

17.☀️Those properties are outlined below:

☀️Aqueous solutions of acids are electrolytes, meaning that they conduct an electrical current.

☀️Acids have a sour .

18.a)dilute Sulphuric acid + Zinc granules —> Zinc Sulphate + Hydrogen gas.

b)Dilute Hydrochloric acid + Magnesium ribbon —> Magnesium Chloride + Hydrogen gas.

c) Dilute Sulphuric acid + Aluminium powder —> Aluminium Sulphate + Hydrogen gas.

d)Dilute hydrochloric acid + Iron fillings — > Iron (ii) Chloride + Hydrogen gas.

19.Haemoglobin is the respiratory pigment that transports oxygen to the body cells for cellular respiration. Therefore, deficiency of haemoglobin in blood can affect the oxygen supplying capacity of blood. This can lead to deficiency of oxygen in the body cells. It can also lead to a disease called anaemia.

20.When white light after passing through a prism falls on a screen, only the seven colors (VIBGYOR) are mainly seen. These band of colors obtained on screen, is called spectrum. The prism splits the colors present in white light. The splitting of white light into its constituent colors is called dispersion

21.Therefore operating a solar cooker is not expensive. Disadvantage of a solar cooker is that manufacturing cost of a solar cooker is very expensive. If there is no sunlight then it will not work. There are some places where the days are too short or cloud covers them round the year.

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Answer 2

Answer:

idk pls tell how to do this