GATE XL Question Paper 2020 Download Free PDF
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SAMPLE QUESTIONS
Q1. An aqueous solution contains a mixture of 10-8 M NaCl and 10-8 M HCl.
Choose the correct statement about this solution.
(A) The solution is a buffer with pH less than 7.00
(B) The solution is a buffer with pH greater than 7.00
(C) The solution is not a buffer but has its pH less than 7.00
(D) The solution is not a buffer but has its pH greater than 7.00
Q2. The coordination complex which has a distorted octahedral structure is
(Given: Atomic numbers of V: 23; Mn: 25; Ni: 28; Cu: 29)
(A) [Ni(H2O)6]2+
(B) [Mn(H2O)6] 2+
(C) [V(H2O)6] 2+
(D) [Cu(H2O)6] 2+
Q3. The correct order of the first ionization energies of He, B, N and O in their corresponding ground state is
(A) He > N > O > B
(B) O > N > B > He
(C) He > B > N > O
(D) N > O > B > He
Q4. The human major histocompatibility complex (MHC) is
(A) Polygenic and monomrphic
(B) Polygenic and polymorphic
(C) Monogenic and polymorphic
(D) Monogenic and monomrphic
Q5. Which one of the following bonds is NOT present in ATP?
(A) Phosphoester
(B) Phosphoanhydride
(C) N-Glycosidic
(D) α-Glycosidic
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