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WHO DISCOVERD EARTH'S CORE
what is mathmatics
prove that if in an arithmetic sequence of natural numbers, one of the terms is a perfect square, then there are many terms which are perfect squares. Is there an arithmetic sequence of natural numbers in which no terms term is a perfect square ?
what is metals and non-metals?
FIRST POSTOFFICE IN INDIA
An object travels for 10 s with uniform acceleration along a straight line path . During this period if the velocity of the object is increased from 5 meter per second to 25 meter per second ,then find the distance traveled by the body ?
Complete the following (a) Zn + CuSO4 = (b) Fe2O3 + Al =
Balance the following equations (a) H2SO4+ NaOH = Na2SO4+H2O (b) Ba(OH)2+ HBr =BaBr2 + H2O (c) KCN + H2SO4 = K2SO4+HCN (d) Al + HCl = AlCl3 + H2O (e) CH4 + O2 = CO2 + H2O
Write balanced equation for the following reactions and identify the type of reaction (a) Zinc Carbonate gives Zinc Oxide plus Carbon dioxide (b) Magnesium plus Hydrochloric acid gives Magnesium Chloride plus Hydrogen (c) Potassium Bromide plus barium Iodide gives Potassium Iodide plus Barium Bromide (d) Hydrogen plus Chlorine gives Hydrogen Chloride
What is exothermic reaction and endothermic reaction? Give examples
What is a balanced chemical equation? Why should chemical equation be balanced?
What is the difference between displacement reaction and double displacement reaction? Write equation for these reactions
Zn+CuSO4=-------------- Fe2O3+Al=------------
What is the chemical equation of Zinc metal reacts with liquid Hydrochloric acid to produce a solution of Zinc chloride and Hydrogen gas
Explain in terms of electrons transfer (a)Oxidation (b) Reduction
I have a total of Rs 300 in coins of denomination Re 1,Rs 2 and Rs 5. The number of Rs 2 coins is 3 times the no of Rs 5 coins. The total number of coins is 160. How many coins of each denomination are with me?
HOW WE CAN CALCULATE THE GOODWILL OF A PARTNERSHIP FIRM???
Define the pitch of a screw.
What is a unit ?
The least count of a vernier calipers having 20 vernier divisions when 1 M.S.D = 0.1 cm is ____________________ cm