Sometimes, indigestion is caused by the secretion of too much hyd

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

201.

Which one among the following is correct regarding 20Ne, 23Na+, 19F- and 24Mg2+?

  • They are isomers of each other

  • They are isotopes of each other

  • They are isoelectronic with each other

  • All of the above


202.

Which of the following pairs is/are correctly matched?

  1. Isotopes: Atoms with the same atomic number but a different atomic mass
  2. Isobars: Atoms with the same number of neutrons but different atomic number
  3. Isotones: Atoms with same mass number but different atomic number

Select the correct answer using the code given below:

  • 1, 2 and 3

  • 1 only

  • 1 and 2 only

  • 2 only


Advertisement

203.

Sometimes, indigestion is caused by the secretion of too much hydrochloric acid in the stomach. To ease the pain caused, a tablet can be taken that reacts to reduce the amount of acid present. Which one among the following would be inappropriate for a manufacturer to include as a major reactant in the tablet?

  • CaCO3

  • MgCO3

  • NaOH

  • Mg(OH)2


C.

NaOH

Here the reducing agent FeBr3 gets oxidized and turns into an aqueous solution of FeCI3


Advertisement
204.

The nucleus of a singly ionized carbon atom contains

  • 6 protons and 6 neutrons

  • 5 protons and 6 neutrons

  • 6 protons, 6 neutrons and 6 electrons

  • 12 protons, 6 neutrons and 6 electrons


Advertisement
205.

The following equation is an example of a redox reaction, in which Cl2 is the oxidizing agent and FeBr3 is the reducing agent:

2FeBr3(aq) + 3Cl2 (g) = 2FeCl3(aq) + 3Br2(1)

Which one among the following statements is incorrect for this redox reaction?

  • Oxidizing agents are themselves reduced

  • Reducing agents gain or appear to gain electrons

  • Reducing agents are themselves oxidized

  • Oxidizing agents oxidize other substances.


206.

Which one among the following nitrogen compounds has the least percentage of nitrogen by mass?

  • (NH4)3PO4

  • NH3

  • NH4OH

  • NH4NO3


207.

Which one among the following is the correct order of the amount of lime (CaO), silica (SiO2), alumina (Al2O3), and ferric oxide (Fe2O3) in Portland cement?

  • CaO > SiO2 > Al2O3 > Fe2O3

  • SiO2 > CaO > Fe2O3 > Al2O3

  • Al2O> SiO2 > CaO > Fe2O3

  •  Fe2O> Al2O> SiO2 > CaO


208.

Which one among the following transitions of electron of hydrogen atom emits radiation of the shortest wavelength?

  • n = 2 to n = 1

  • n = 3 to n = 2

  • n = 4 to n = 3

  • n = 5 to n = 4


Advertisement
209.

Which one among the following is the most appropriate statement with respect to the atomic weight of an element?

  • The atomic weight of an element is the sum total of the number of protons and neutrons present in the atom of the element

  • Unlike mass number, the atomic weight of an element can be a fraction

  • The atomic weight of an element is a whole number

  • The atomic weight of all the atoms in an element is the same


210.

Which one among the following is the major constituent of soda-lime glass?

  • Sodium oxide

  • Calcium oxide

  • Calcium carbonate

  • Silica


Advertisement