9th Class Chemistry Chapter Wise Online MCQ Test With Answers PDF English Medium

Chemistry 9th Class English Medium Online Test

Sr. #	Questions	Answers Choice
1	What does keep the particles present in the nucleus intact.	Particles are held together by dipolar force Particles are held together by wee nuclear force Particles are held together by strong nuclear force Particles are held together by electrostatic force
2	How is radio carbon dating useful for archeolgists.	It helps detemine whether the matter is radioactie or not It helps determine the age of organic matter It helps determine the composition of matter It helps deterime the usefulness of matter
3	What will be the relative atomic mass of nitrogen given the abundance of its two isotopes, ¹⁴ N and ¹⁵N are 99.64 and 0.35	14.0210 14.2100 14.0021 14.1200
4	In which isotope of oxygen there are the equal numbr of protons electons and neutorns.	O<sup>16</sup> <sup>17</sup>O <sup>18</sup>O None of these
5	Which particle is present in differente number in the isotopes.	Proton Electron Neutron Both neutron and electron
6	Why has isotopes not been shown int he periodic table.	Isotopes do not show periodic behavior Periodic tble cannot accomodate a large number of isotopes of different elements All the isotops have same atomic number so there is no need to give them separate places Someof the isotopes are unstble and they give rise to different elements.
7	What information was obtained fom discharge tube expriments?	Electrons and protons were discovered Structur eof atom was discovered Neutrons and protons were discovered Presence of nucleus in an atom was discovered
8	How many electrons can be accommodated at the msot in the third shell of the elements.	8 12 10 18
9	Which one of the suspension.	Chalk in water Tootpast Ink Blood
10	Which one of the example of colloid.	Paints Milk of magnesia Jelly None of these
11	The solubility of which salt decreases with the increase of temperture.	KNO3 Li2SO4 KCl NaNO3
12	Solubility of whcih salt increases with the increase of temperture.	KNO3 KCL NaNO3 All of These

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