Transition Element Quiz-16

Transition Element Quiz-16

Dear Readers,

The one subject in NEET which is candidates who can easily attain good marks is Chemistry. That's the reason, often, one doesn’t pay notice and choose to compromise it. But if one wants to rank above others, the tip is to be thorough with NEET chemistry concepts. The understanding of reactions and definite basic understanding is what requires major attention in Chemistry but once done it only gets simpler from there. The main focus on the to-do list should be on getting a hang of the NCERT syllabus of NEET chemistry. .

Q1.  Ruby copper is:

•   Cu₂O
•   Cu(OH)₂
•   CuCl₂
•   Cu₂Cl₂

Solution
Cu₂O is called ruby copper.

Q2.  ‘Hydride gap’ is referred to which region of the Periodic Table?

•   Groups 3, 4 and 5
•   Groups 5, 6 and 7
•   Groups 4, 5 and 6
•   Groups 7, 8 and 9

Solution
Elements having electronegativity in the range of 1.35 -1.82 do not form stable hydride. Thus, leads to hydride gap. These are present in the middle of the Periodic Table i.e., belongs to groups 7, 8 and 9.

Q3.  Which do not decolourise KMnO₄ aqueous solution?

•  
•  
•   
•   

Solution 

 
Q4.  Which one of the following statements is false?

•   During roasting, moisture is removed from the ore.
•   The ore is freed from almost all nonmetallic impurities.
•   Calcination of ore is carried out in the absence of any blast of air.
•   The concentrated zince blend is subjected to calcination during its extraction by                  pyrometallurgy.      

Solution
The nonmetallic impurities such as mica, earth particles etc associated with ore. These impurities are known as gangue.

Q5. In aqueous solution Eu²⁺ ion acts as

•   An oxidizing agent
•   A reducing agent
•   An acid
•   All of these

Solution
 

Q6.  Which is used for electrical purposes?

•   German silver
•   Beryllium bronze
• Constantan
•   Fool’s gold

Solution
Constantan is an alloy of Cu and Ni.

Q7. Blue vitriol is

•   CuSO₄
•   CuSO₄∙5H₂O
•   Cu₂SO₄
•   CuSO₄∙H₂O

Solution

Q8. Bessemer’s converter is used in the manufacture of:

•   Cast iron
•   Pig iron
•   Steel
•   Wrought iron

Solution
In Bessemer’s converter impurities of C, Mn, Si, P in pig iron are oxidized to produce steel.

Q9. When steam is passed over heated iron, one of the products is:

•   FeO
•   Fe₂O₃
•   Fe₃O₄
•   FeSO₄

Solution
3Fe+4H₂O⟶Fe₃O₄+4H₂

Q10.  In Mac Arthur forrest method, silver is extracted from the solution of Na[Ag(CN)₂] by the use of

•   Fe
•   Mg
•   Cu
•   Zn

Solution
In Mac-Arthur-Forrest method silver is extracted from the solution of sodium argentocyanide by using zinc. 2Na[Ag(CN)₂]+Zn⟶Na₂[Zn(CN)₄]+2Ag↓