ABC Chemistry for NEET. We covered all the ABC Chemistry for NEET in this post for free so that you can practice well for the exam.
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ABC Chemistry Objective for NEET Students
CuSO4.5H2O on heating upto 370K forms
(A) CuSO4 H₂O
(B) CuSO4
(C) CuSO4.3H₂O
(D) Cu₂0
Option a – CuSO4 H₂O
Spitting of silver is due to the absorption of
(A) CO₂
(B) H₂S
(C) H₂
(D) O2
Option d – O2
Purple of Cassius is
(A) AuCl₂
(B) AuCl4
(C) Colloidal gold
(D) None of these
Option c – Colloidal gold
Calamine is chemically
(A) ZnS
(B) ZnCO3
(C) ZnO.Fe2O3
(D) ZnO
Option b – ZnCO3
Excess of KI reacts with CuSO4 solution and then Na2S2O3 solution is added to it. Which of the statements is incorrect for this reaction
(A) Evolved I2 is reduced
(B) Cul2 is formed
(C) Na2S203 is oxidised
(D) Cu2l2 is formed
Option b – Cul2 is formed
Ammonium dichromate on heating forms
(A) Cr₂O3
(B) N₂
(C) None
(D) Both (A) & (B)
Option d – Both (A) & (B)
Stellite, an alloy of chromium contains
(A) Co
(B) W
(C) Both (A) & (B)
(D) All of these
Option c – Both (A) & (B)
Transition elements are frequently used as catalysts because of
(A) Large ionic charge
(B) Large surface area for the reactants to be absorbed
(C) Unpaired d-electrons
(D) Both (B) and (C) are correct
Option d – Both (B) and (C) are correct
The transition element not resistant to corrosion is
(A) Fe
(B) Ni
(C) Co
(D) All of these
Option a – Fe
The element present in red blood cells of a man is
(A) Fe
(B) Ra
(C) Co
(D) All of these
Option a – Fe
Iron is rendered passive by treatment with
(A) Conc. HCI
(B) Conc. HNO3
(C) Conc. HNO2
(D) All of these
Option b – Conc. HNO3
Rusting of iron in moist air involves
(A) Loss of electrons by Fe
(B) Gain of electrons by Fe
(C) Neither gain nor loss of electrons
(D) Hydrogenation of Fe
Option a – Loss of electrons by Fe
Mond’s process is used to prepare
(A) Fe
(B) Ni
(C) Co
(D) HNO3
Option b – Ni
Which of the following is only soluble in aqua regia?
(A) Co
(B) Fe
(C) Ni
(D) Au
Option d – Au
Which one of the following metals corrodes readily in moist air?
(A) Au
(B) Ag
(C) Fe
(D) Ni
Option c – Fe
The transition element present in vitamin B12 is
(A) Mg
(B) Co
(C) Zn
(D) Fe
Option b – Co
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