Science For Tenth Class

1. Write the product formed when Ferrous Sulphate is heated?

2. What is the relationship between angle of Incidence & angle of Reflection?

3. What will happen if the solution Hydrogen Carbonate is heated? Give the equation of the reaction involved?

4. How can Presbyopia be corrected?

5. What is the Composition of Aqua regia?

6. Why are copper wire used as connecting wire?

7. An element X on burring in air form an oxide Xo2 which when dissolved in water turns blue litmus red. Identify if X is a metal or non – metal Justify your answer?

8. What is the cause of resistance offered by a conductor?

9. The near point of a hypermetropic eye is 1m. What is the power of the lens required to correct this defect? Assume that the near point of normal eye is 25cm.

10. What are the two methods of producing magnetic field? Which of these is better and why?

11. Classify the element of third period into metal & non – metal of the modern periodic table?

What do you mean by scattering of light? Describe the arrangement for

observing scattering of light by colloidal solution.

13. A metal X acquires a green colour coating on its surface an exposure to air

(a) Identify the metal X and name the process responsible for this change

(b) Name the green coating formed on the metal?

14. A potential difference venist across a conductor of length L & cross section area A how is the resistance R of conductor affected when only V is halved only L is halved and only A is halved?

15. Describe an experiment in detail to study refraction of light through a prism Draw with a ray diagram too. What do you mean by angle of deviation?

Describe an experiment to study refraction of a light ray through a rectangular glass slab what are the important result obtained from the experiment?

16. The reaction metal X and Fe2 O3 is highly exothermic and is used to join railway

(a) Identify metal X and name the reaction

(b) Write the chemical equation of its reaction with fe2 O3

An organic Compound A is widely used as a puesentative in pickles and has a molecular formula C2 H2 O2. This compound reacts with ethanol to form a sweet smelling Compound B

(a) Identify the Compound A

(b) Write the chemical equation with ethanol to from compound B

(d) Name the process and write equations?

(e) Which gas is produced when compound A reacts with washing Soda? Write the chemical equations?

SECTION B

17. When bile is stored?

18. Name the plant hormone which in habits growths?

19. What is genetic drift?

20. What contribution forest officer Sh,. A.K. Banerjee made in protection of environment?

21. What is the function of recepters & effector organ?

22. What is blood pressure? What is the value in a healthy person name the instrument used to measure it?

23. How information passes through neurons?

24. How do we know how old fossils are?

25. What is meant by pollination? Describe its various types a long with name of various pollination agents?

26. Draw a diagram of Human Brain?

27. [i] what is meant by pollination? Name its various types of pollination agents?

(ii)Labeled the diagram given, and explain how exchange of gases occurs in leaf of a plant.

(iii)Draw cross- section of human heart; label it arrow path of circulation by arrows only.

Describe the working of artificial Kidney?

-------------------------------------------------------------------------------------------------------
www.cbsekey.com
Other Educational Portals
English | cbse | Science | Mathematics

The Missing Mail | Class IX - Interact in English

NCERT / CBSE Literature Reader for English Course (Communicative) Important Exercise Questions Q.3: (a) Why is Ramanujam worried about getting his daughter married? Give four reasons. (b) How does the postman console and guide Ramanujam and his family during each of the instances you have listed in 3 (a)? Ans 3(a): Ramanujam is worried as he could not find a suitable match to marry his daughter off which was getting delayed because of different reasons. The four causes of his worriedness are - (i) Sometimes horoscopes did not match, (ii) Sometimes the girl’s appearance were not approved, (iii) At times there were problems of too much dowry and other financial matters, (iv) The season was closing with only three more auspicious dates left, whereas, he was not able to finalise any alliance by that time. Ans 3(b): First instance - When Ramanujam said that horoscopes did not agree Thanappa consoled and guided him by saying that he should not utter inauspicious words and when the God wills ...

Chivvy (Class VII - English Honeycomb - Chapter 4)

NCERT Textbook Exercise Questions (Important only) Working with the Poem Q.2: The last two lines of the poem are not prohibitions or instructions. What is the adult now asking the child to do? Do you think the poet is suggesting that this is unreasonable? Why? Ans: In the last two lines the adults are asking the child to think himself and to be independent in taking decisions in some matters. The adults are asking to be firm and determined which is unreasonable because they themselves don’t allow the child to take any decision. They always tell him what to do or what not to do. So, their asking the child to make up his own mind is totally unreasonable. Q.3: Why do you think grown-ups say the kind of things mentioned in the poem? Is it important that they teach children good manners, and how to behave in public? Ans: The grown-ups say such kind of things to their children in order to teach those good manners, etiquettes and how to behave in public. It is important to teach the children ...

POLITICAL SCIENCE CLASS X CBSE - POLITICAL PARTIES

POLITICAL SCIENCE CLASS X CBSE POLITICAL PARTIES CHALLENGES TO POLITICAL PARTIES We know that how crucial political parties are for the democracy. They are the most visible face of the democracy and people blame them for whatever is wrong in the working of democracy. This is a case of our country too. Popular dissatisfaction and criticism has focused on four problem areas in the working of political parties. 1. LACK OF INTERNAL DEMOCRACY (with in the party): all over the world there is a tendency in the political parties towards the concentration of power in one or few leaders at the top. --parties do not keep membership registers, do not hold organizational meetings and conduct internal elections regularly. --ordinary members do not get sufficient information on what happens inside the party. --leaders assume greater power to make decisions in the name of party. --more than loyalty to the party principles and policies, personal loyalty to the lead...

CBSE Board Students Helpline

Search This Blog