Question

True or false

      A. Fertilizers are the only source of water pollution.

      B. All isotopes are radioactive

      C. Ozone is a form of oxygen              

      D. When an atom emits a beta particle it becomes a different element.

      E. At the same temperature in the same size container 20g of O₂ gas

          has the same pressure as 20g of Cl₂ gas.f

      .F. The two major components of air are oxygen and nitrogen

       G   Two gases that contribute to acid rain are NH₃ and CH₄.

       H. A water solution with pH5 has a higher [H⁺] than a water solution

          With pH2.

       I.    Doubling the Kelvin temperature doubles the pressure of a gas

             In a container.   

       J.   Automobile catalytic converters change CO₂ to CO.

Answer 1

A) FALSE

Fertilizers are the source of pollution but they are not the only source of pollution.

B) FALSE

Not all isotopes are radioactive.

C) FALSE

Ozone is the distinct molecule with properties completely different than Oxygen.

D) TRUE

Beta particle release results in increase in atomic number by 1 while keeping the mass number same.

E) FALSE

Pressure is Calculated using Ideal Gas Law of PV=nRT. Now moles of O2 and Cl2 are different since their molecular mass is different. Hence pressure will not be same.

F) TRUE

Air is roughly 21% Oxygen and 79% Nitrogen by moles.

G) FALSE

Gases contributing to Acis rain are SO2 and NO_x

H) FALSE

pH = -log ([H+])

When pH = 5 [H+] = 1*10^-5

When pH = 2 [H+] = 1*10^-2

We can see water with pH of 2 has higher [H+]

I) TRUE

PV/T = Constant

Considering V = Constant

P/T = Constant

So, doubling T

J) FALSE

Automobile catalytic converters change CO to CO2