# Q] Choose one option and explain how it is correct1) A body is thrown vertically upward from the surface of the ground with the velocity of 9.8 m/s. What maximum height it will reach?(answer should come 4.9 m)2) The reactants and the products of a chemical reaction are in different physical states. Then what is the type of the reaction?a) Heterogeneous b) Homogeneous c) Exothermic d) Endothermic3) Name the gas liberated when dilute hydrochloric acid reacts with zinc.a) Oxygen b) Carbon dioxide c) Hydrogen d) Carbon monoxide

1
by jafiya

2014-09-06T15:26:21+05:30

### This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
1) we choose the following eq, as we are not involved with time variable. the other equations have time t.

v² = u² + 2 a S
0² = 9.8² - 2 *9.8 * S
S = 9.8 * 9.8 / 2 * 9.8 = 4.9 meters

2) Heterogeneous - involves different states o f material.  exothermic, endothermic relate to absorption or release of heat from reaction

3) Hydrogen

You don't know kvnmurty how to write english after every fullstop the letter is capital
Comment has been deleted
thanks & welcom
Comment has been deleted