CBSE 10th Board Sample Paper V Chemistry

Sample papers

Central Board of Secondary Education (CBSE)

Sample Paper – 2012
Class – X
Subject – Chemistry


  1. What will be when magnesium ribbon burns in air?
  2. Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
  3. Write the conditions, when do you say that a chemical reaction has taken place?
  4. What do you mean by chemicalequation?
  5. Why decompotion reactions are called the opposite of combination reactions?
  6. What are redox reactions? Give examples.
  7. Why do we balance a chemical equation?
  8. What is hit and trial method of balancing chemical equation?
  9. What does the word “aq” represent in a chemical equation?
  10. What actually happen during a chemical reaction?
  11. Why water starts boiling if lime is added to it.
  12. The glucose combines with oxygen in our body cells and provides energy. What is the special name of this reaction?
  13. Is lime natural or man-made substance? Why? , Give one use of it.
  14. Why during electrolysis of water some drops of sulphuric acid is added.
  15. In what ratio of hydrogen and oxygen formed during electrolysis of water and why?
  16. Why silver chloride does is stored in dark coloured bottles.
  17. What do you mean by recipitates?
  18.  A reddish brown element X on heating converted into a black coloured compound Y.  Give interconversion reaction of X and Y.
  19. What is rancidity? Mention four methods to slow down it.
  20.  What does a complete chemical reaction represent?
  21. What do you mean by oxidation-reduction reaction. Give an example to explain this.
  22. Write the definition of antioxidants?

23. What happens when: Write the chemical balance equation

a. Hydrogen gas combines with nitrogen to form ammonia.

b. Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.

c. Barium chloride reacts with aluminum sulphate to give aluminum chloride and a precipitate of barium sulphate.

d. Hydrogen sulphide gas burns in air to give water and sulphur dioxide.

24. Write balanced chemical equation for all the above.

a.  BaCl2 + H2SO4à BaSO4 + HCl

b.   NaCl + AgNO3àAgCl + NaNO3

c. NaOH + H2SO4à Na2SO4 + H20

d.    HNO3 + Ca(OH)2àCa(NO3)2 + H20

25. Why do we use AgNOin black and white photography.

Sample Paper / Model Test Paper CBSE 12th 2012

CBSE 10th Board Sample Paper V Chemistry
Rate this post

More Govt Jobs given below

SSC Combined Graduate Level Exam Sample Paper

Staff Selection Commission

Combined Graduate Level Exam

Subject – General English

Directions (1-10): In the following passage there are blanks, each of which has been numbered. These numbers are printed below the passage and against each four words are suggested, one of which fits the blank appropriately. Find out the appropriate word.

A two party (1) is must for a democratic country like (2) to achieve national objectives (3) as removal (4) unemployment,

 » Read more about: SSC Combined Graduate Level Exam Sample Paper  »

SSC CGL Exam Model Practice Paper


Subject- General English

Combined Graduate level Examination SSC 2011

Directions (1-10): A passage is given below in which blanks have been numbered. Four alternative choices are given below against each number. In the context of the whole passage, select the best word in each case to fit each of the blanks to complete the passage correctly and meaningfully.

During the World War I penicillin was (1) on six patients.

 » Read more about: SSC CGL Exam Model Practice Paper  »

IBPS Clerk Exam Model Question Paper 2






1. Which country will introduce entrepreneur visa to encourage foreign nationals from India and elsewhere to catalyze the country’s economic recovery?

(a) US                                                         (b) Britain

(c) France                                                (d) Denmark

(e) None of these

2. Name the state whose chief minister has said that the Armed Forces Special Powers Act can be withdrawn from some areas with a rider that the Army can step in again if the situation so warrants.

 » Read more about: IBPS Clerk Exam Model Question Paper 2  »

IBPS PO / Management Trainee Exam Model Question Paper 2


Bank Probationary Officer ( Bank PO)


General Knowledge

1. Name the Karnataka minister who resigned in the wake of the Lokayukta police filing a first information report against him on irregularities related to allotment of land through the Karnataka Industrial Area Development Board (KIADB).

(a) Katta Subramanya Naidu              (b) N Santosh Hegde

(c) Jagmohan Reddy                           (d) Roshan Baig

(e) None of these


 » Read more about: IBPS PO / Management Trainee Exam Model Question Paper 2  »

IBPS PO / Management Trainee Exam Model Question Paper 1




General Knowledge

1. Which of the following is rated the poorest region of the world?

(a) The Middle East                           (b) Asia

(c) Sub-Saharan Africa                      (d) Latin America

(e) None of these

2. Which of the following terms is not used in the world of economics/finance?

(a) Sinking Fund                                 (b) Third World

(c) Open Door Policy                                     (d) Devaluation

(e) Privilege Motion


 » Read more about: IBPS PO / Management Trainee Exam Model Question Paper 1  »

Disclaimer: we provide job information based on information from different job website.although we take extreme care for accuracy of the information provided, but you must check the authenticity of the website before applying for the job. We are not responsible for your operation , once you leave our website and apply thereafter. Please recheck the genuineness of the job website from your end. Exams|Exam Pattern | Contact us| Privacy Policy