Eamcet - Chemistry - P Block Elements 13 And 14 Groups Test

Test Instructions :

1. The Test is 1hr duration.
2. The Test Paper consists of 30 questions. The maximum marks are 30.
3. All the questions are multiple choice question type with three options for each question.
4. Out of the three options given for each question, only one option is the correct answer.
5. Each question is allotted 1 mark for each correct response.
6. 0.25 will be deducted for incorrect response of each question.
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Observe the following statements regarding purification of bauxiteI. During Hall's process, silica is removed as Si (vapour)II. Bauxite ore contaminated with Fe2O3 is purified in Baeyer's processIII. During Serpeck's process, AlN is formedThe correct answer is

  

  

  

  

Bauxite is a mineral for the extraction of :

  

  

  

  

Carbogen to

  

  

  

  

The following are some statements related to VA group hydrides,I . Reducing  property increases from NH3 to BiH3.II..Tendency to donate lone pair decreases from NH3 to BiH3III.Thermal stability of hydrides decreases from NH3 to BiH3.IV. Bond angle of hydrides decreases from NH3 to BiH3.The correct statements are

  

  

  

  

The formula of the product formed, when sodium thiosulphate solution is added to silver bromide is

  

  

  

  

In Fischer-Ringe's method of separation of nobles gas mixture, from air is used

  

  

  

  

"Fluorosis" disease is caused due to the reaction of ________ with excess of fluoride in the body

  

  

  

  

In the Dewar's method of separation of noble gases, the mixture of noble gases is kept in contact with coconut charcoal at 173K. Which one of the following gaseous mixtures is not adsorbed on to the charcoal ?

  

  

  

  

What is the correct order of occurrence (% by weight) in air of Ne, Ar and Kr ?

  

  

  

  

Which of the following is not a peroxy acid

  

  

  

  

The chemical formula of feldspar is

  

  

  

  

Observe the following statements :I.   Bleaching   powder   is   used   in   the preparation of chloroform.II.  Bleaching powder decomposes in the presence ofCoCl2 to liberate 02.III.Aqueous KHF2 is used in the preparation of fluorine.The correct combination is :

  

  

  

  

Two oxides of nitrogen,NO and NO2 react together at 2530K and form a compound of nitrogen X.X reacts with water to yield another compound of nitrogen Y.The shape of the anion of Y molecule is

  

  

  

  

SiCl4 on hydrolysis forms X and HCI. Compound X loses water at 1000oC and gives Y. Compounds X and Y respectively are

  

  

  

  

Helium mixed with oxygen is used in the treatment of:

  

  

  

  

The correct order of reducing abilities of hydrides of V group elements is

  

  

  

  

Calorific value of producer gas is low because of

  

  

  

  

Which of the following is used for making optical instruments ?

  

  

  

  

Ordinary glass is a combination of the following

  

  

  

  

The number of oxygen atoms bonded to one phosphorus atom in P4O6 is:

  

  

  

  

 Which of the following is not correct

  

  

  

  

Which of the following is not correct

  

  

  

  

Which of the following has S---S bond ?

  

  

  

  

Which of the following is not correct

  

  

  

  

Which pair of oxyacids of phosphorous contain ‘P - H' bonds

  

  

  

  

The type of bonds present in sulphuric anhydride

  

  

  

  

While phosphorus form PCl5, nitrogen does not form NCl5 because

  

  

  

  

Bond energy of Cl2,Br2 and I2 follow the order

  

  

  

  

Which one of the following compounds in aqueous solution gives a white precipitate with perichloric acid ?

  

  

  

  

Which of the following is the anhydride of HNO3

  

  

  

  

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