Practice Questions

Q49.Which one of the following is NOT a copolymer? (1) Neoprene (2) PHBV (3) Buna- S (4) Butadiene-styrene JEE Main 2022 (28 Jun Shift 1) JEE Main Previous Year Paper

Q49.The structure of Tagamet (Cimetidine) is: (1) (2) (3) (4)

Q50.Which one of the following is an example of artificial sweetner? (1) Bithional (2) Alitame (3) Lactose (4) Salvarsan

Q50.Sugar moiety in DNA and RNA molecules respectively are JEE Main 2022 (29 Jun Shift 1) JEE Main Previous Year Paper (1) β −D −2−deoxyribose, β −D−deoxyribose (2) β −D−ribose, β −D −2 deoxyribose (3) β −D −2−deoxyribose, β −D−ribose (4) β −Ddeoxyribose, β −D −2 deoxyribose

Q50.Animal starch is the other name of (1) amylose (2) maltose (3) glycogen (4) amylopectin

Q50.The structure of protein that is unaffected by heating is : (1) secondary structure (2) tertiary structure (3) primary structure (4) Quaternary structure

Q50.Which of the following is structure of a separating funnel? JEE Main 2022 (27 Jun Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)

Q50.During the denaturation of proteins, which of these structures will remain intact ? (1) Primary (2) Secondary (3) Tertiary (4) Quarternary

Q50.In the flame test of a mixture of salts, a green flame with blue centre was observed. Which one of the following cations may be present? JEE Main 2022 (24 Jun Shift 2) JEE Main Previous Year Paper (1) Calcium (2) Copper (3) Barium (4) Strontium

Q50.Which of the following compounds is an example of hypnotic drug? (1) Seldane (2) Amytal (3) Aspartame (4) Prontosil

Q61.If z = 2 + 3i, then z5 + (z)5 is equal to: (1) 244 (2) 224 (3) 245 (4) 265

Q63.The number of solutions of cos𝑥= sin𝑥, such that -4𝜋≤𝑥≤4𝜋 is (1) 4 (2) 6 (3) 8 (4) 12

Q64.The remainder when 32022 is divided by 5 is (1) 1 (2) 2 (3) 3 (4) 4

Q64.If a1, a2, a3 … and b1, b2, b3 … . are A.P. and a1 = 2, a10 = 3, a1b1 = 1 = a10b10 then a4b4 is equal to (1) 28 (2) 28 27 24 (3) 23 (4) 22 26 23 Q65. α = sin 36° is a root of which of the following equation (1) 16x4 −20x2 + 5 = 0 (2) 16x4 + 20x2 + 5 = 0 (3) 10x4 −10x2 −5 = 0 (4) 16x4 −10x2 + 5 = 0

Q65.Let p : Ramesh listens to music. q : Ramesh is out of his village r : It is Sunday s : It is Saturday Then the statement "Ramesh listens to music only if he is in his village and it is Sunday or Saturday" can be expressed as (1) ((~q) ∧(r ∨s)) ⇒p (2) (q ∧(r ∨s)) ⇒p (3) p ⇒(q ∧(r ∨s)) (4) p ⇒((~q) ∧(r ∨s))

Q66.Let p, q, r be three logical statements. Consider the compound statements S1 : ((~p) ∨q) ∨((~p) ∨r) and S2 : p →(q ∨r) Then, which of the following is NOT true? (1) If S2 is True, then S1 is True (2) If S2 is False, then S1 is False (3) If S2 is False, then S1 is True (4) If S1 is False, then S2 is False

Q67.The boolean expression (~(p ∧q)) ∨q is equivalent to (1) q →(p ∧q) (2) p →q (3) p →(p →q) (4) p →(p ∨q)

Q67.Consider the following statements: A: Rishi is a judge. B: Rishi is honest. C : Rishi is not arrogant. The negation of the statement "if Rishi is a judge and he is not arrogant, then he is honest" is (1) B →(A ∨C) (2) (~B) ∧(A ∧C) (3) B →((~A) ∨(~C)) (4) B →(A ∧C)

Q67.Consider the following two propositions : 𝑃1: ~𝑝→~𝑞 𝑃2: 𝑝∧~𝑞∧~𝑝∨𝑞 If the proposition 𝑝→~𝑝∨𝑞 is evaluated as FALSE, then (1) 𝑃1 is TRUE and 𝑃2 is FALSE (2) 𝑃1 is FALSE and 𝑃2 is TRUE (3) Both 𝑃1 and 𝑃2 are FALSE (4) Both 𝑃1 and 𝑃2 are TRUE

Q67.Which of the following statements is a tautology? (1) ~𝑝∨𝑞⇒𝑝 (2) 𝑝⇒~𝑝∨𝑞 (3) ~𝑝∨𝑞⇒𝑞 (4) 𝑞⇒~𝑝∨𝑞

Q67.The statement (p ∧q) ⇒(p ∧r) is equivalent to (1) q ⇒(p ∧r) (2) p ⇒(p ∧r) (3) (p ∧r) ⇒(p ∧q) (4) (p ∧q) ⇒r JEE Main 2022 (29 Jul Shift 1) JEE Main Previous Year Paper

Q67.If vertex of parabola is (2, −1) and equation of its directrix is 4x −3y = 21, then the length of latus rectum is (1) 2 (2) 8 (3) 12 (4) 16

Q68.Let f(x) = ax2 + bx + c be such that f(1) = 3, f(−2) = λ and f(3) = 4. If f(0) + f(1) + f(−2) + f(3) = 14 , then λ is equal to JEE Main 2022 (28 Jul Shift 2) JEE Main Previous Year Paper (1) −4 (2) 132 (3) 23 (4) 4 2

Q68. (p ∧r) ⇔(p ∧(~q)) is equivalent to (~p) when r is (1) p (2) ~p (3) q (4) ~q

Q68.The statement 𝑝⇒𝑞∨𝑝⇒𝑟 is NOT equivalent to: (1) 𝑝∧~𝑟⇒𝑞 (2) ~𝑞⇒~𝑟∨𝑝 (3) 𝑝⇒𝑞∨𝑟 (4) 𝑝∧~𝑞⇒𝑟