Sample Paper
There are 25 sample questions taken from the Year 2021 NEET Entrance test Paper
Q1. The incorrect statement among the following is :
(1) Actinoids are highly reactive metals, especially when finely divided.
(2) Actinoid contraction is greater from element to element than Lanthanoid contraction.
(3) Most of the trivalent Lanthanoid ions are colorless in the solid-state.
(4) Lanthanoids are good conductors of heat and electricity.
Answer: (3)
Q2. Given below are two statements:
Statement I:
Aspirin and Paracetamol belong to the class of narcotic analgesics.
Statement II:
Morphine and Heroin are non-narcotic analgesics. In the light of the above statements, choose the correct answer from the options given below.
(1) Statement I is incorrect but Statement II is true.
(2) Both Statement I and Statement II are true.
(3) Both Statement I and Statement II are false.
(4) Statement I is correct but Statement II is false.
Answer: (3)
Q3. Statement-I :
Acid strength increases in the order given as HF << HCl << HBr << Hl.
Statement II :
As the size of the elements F, Cl, Br, I increases down the group, the bond strength of HF, HCl, HBr, and Hl decreases and so the acid strength increases. In the light of the above statements, choose the correct answer from the options given below.
(1) Statement I is incorrect but Statement II is true.
(2) Both Statement I and Statement II are true.
(3) Both Statement I and Statement II are false.
(4) Statement I is correct but Statement II is false.
Answer: (2)
Q4. Which one among the following is the correct option for the right relationship between \(C_{P}\) and \(C_{V}\) for one mole of an ideal gas?
(1) \(C_{V}=R C_{p}\)
(2) \(C_{P}+C_{v}=R\)
(3) \(C_{P}-C_{v}=R\)
(4) \(C_{p}=R C_{V}\)
Answer: (3)
Q5. The correct option for the number of body-centered unit cells in all 14 types of Bravais lattice unit cells is:
(1) 3
(2) 7
(3) 5
(4) 2
Answer: (1)
Q6. Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is:
(1) Beryllium chloride
(2) Calcium chloride
(3) Strontium chloride
(4) Magnesium chloride
Answer: (1)
Q7. Tritium, a radioactive isotope of hydrogen, emits which of the following particles?
(1) Neutron (n)
(2) Beta (β‾ )
(3) Alpha (α)
(4) Gamma (γ)
Answer: (2)
Q8. The maximum temperature that can be achieved in a blast furnace is:
(1) up to 5000 K
(2) up to 1200 K
(3) up to 2200 K
(4) up to 1900 K
Answer: (3)
Q9. \(\mathrm{BF}_{3}\) is planar and electron deficient compound. Hybridization and number of electrons around the central atom, respectively are :
(1) \(\mathrm{sp}^{2}\) and 8
(2) \(\mathrm{sp}^{3}\) and 4
(3) \(\mathrm{sp}^{3}\) and 6
(4) \(\mathrm{sp}^{2}\) and 6
Answer: (4)
Q10. The major product of the following chemical reaction is:
Answer: (2)
Q11. The molar conductance of \(\mathrm{NaCl}, \mathrm{HCl}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\) at infinite dilution are 126.45, 426.16 and 91.0 \(\mathrm{S} \mathrm{cm}^{2} \mathrm{~mol}^{-1}\) respectively. The molar conductance of \(\mathrm{CH}_{3} \mathrm{COOH}\) at infinite dilution is. Choose the right option for your answer.
(1) \(540.48 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}\)
(2) \(201.28 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}\)
(3) \(390.71 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}\)
(4) \(698.28 \mathrm{~S} \mathrm{~cm}^{2} \mathrm{~mol}^{-1}\)
Answer: (3)
Q12. A particular station of All India Radio, New Delhi, broadcasts on a frequency of \(1.368 \mathrm{kHz}\) (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is : [ speed of light, \(\mathrm{c}=3.0 \times 10^{8} \mathrm{~ms}^{-1}\) ]
(1) \(21.92 \mathrm{~cm}\)
(2) \(219.3 \mathrm{~m}\)
(3) \(219.2 \mathrm{~m}\)
(4) \(2192 \mathrm{~m}\)
Answer: (2)
Q13. Which of the following reactions is the metal displacement reaction? Choose the right option.
(1) \(2 \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2} \rightarrow 2 \mathrm{PbO}+4 \mathrm{NO}_{2}+\mathrm{O}_{2} \uparrow\)
(2) \(2 \mathrm{KClO}_{3} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{KCl}+3 \mathrm{OO}_{2}\)
(3) \(\mathrm{Cr}_{2} \mathrm{O}_{3}+2 \mathrm{Al} \stackrel{\Delta}\longrightarrow \mathrm{Al}_{2} \mathrm{O}_{3}+2 \mathrm{Cr}\)
(4) \(\mathrm{Fe}+2 \mathrm{HCl} \rightarrow \mathrm{FeCl}_{2}+\mathrm{H}_{2} \uparrow\)
Answer: (3)
Q14. The right option for the statement. “Tyndall effect is exhibited by”, is:
(1) Urea solution
(2) NaCl solution
(3) Glucose solution
(4) Starch solution
Answer: (4)
Q15. The compound which shows metamerism is:
(1) \(\mathrm{C}_{4} \mathrm{H}_{10} \mathrm{O}\)
(2) \(\mathrm{C}_{5} \mathrm{H}_{12}\)
(3) \(\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}\)
(4) \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}\)
Answer: (1)
Q16. Match List I with List-II.
List-I List-II
(a) \(\mathrm{PCl}_{5} \quad\) (i) Square pyramidal
(b) \(\mathrm{SF}_{6} \quad\) (ii) Trigonal planar
(C) \(\mathrm{BrF}_{5}\) (iii) Octahedral
(d) \(\mathrm{BF}_{3}\) (iv) Trigonal bipyramidal
Choose the correct answer from the options given below :
(1) (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
(2) (a)-(iv), (b)-(iii), (c)-(i), (d)-(ii)
(3) (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
(4) (a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)
Answer: (2)
Q17. Which one of the following polymers is prepared by addition polymerization?
(1) Dacron
(2) Teflon
(3) Nylon-66
(4) Novolac
Answer: (2)
Q.18. The RBC deficiency is deficiency disease of:
(1) Vitamin \(B_{2}\)
(2) Vitamin \(B_{12}\)
(3) Vitamin \(\mathrm{B}_{6}\)
(4) Vitamin \(B_{1}\)
Answer: (2)
Q19. Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.
Answer: (4)
Q20. Zr(Z=40) and Hf(Z=72) have similar atomic and ionic radii because of :
(1) having similar chemical properties
(2) belonging to the same group
(3) diagonal relationship
(4) lanthanoid contraction
Answer: (4)
Q21. Ethylene diaminetetraacetate (EDTA) ion is:
(1) Tridentate ligand with three “N” donor atoms
(2) Hexadentate ligand with four “O” and two “N” donor atoms
(3) Unidentate ligand
(4) Bidentate ligand with two “N” donor atoms
Answer: (2)
Q22. The major product formed in dehydrohalogenation reactions of 2-Bromo pentane is Pent-2-ene. This product formation is based on?
(1) Huckel’s Rule
(2) Saytzeff’s Rule
(3) Hund’s Rule
(4) Hofmann Rule
Answer: (2)
Q23. An organic compound contains \(78 \%\) (by wt.) carbon and the remaining percentage of hydrogen. The right option for the empirical formula of this compound is: [Atomic wt. of \(\mathrm{C}\) is \(12, \mathrm{H}\) is 1 ]
(1) \(\mathrm{CH}_{4}\)
(2) \(\mathrm{CH}\)
(3) \(\mathrm{CH}_{2}\)
(4) \(\mathrm{CH}_{3}\)
Answer: (4)
Q24. The \(\mathrm{pK}_{\mathrm{b}}\) of dimethylamine and \(\mathrm{pK}_{\mathrm{a}}\) of acetic acid are 3.27 and 4.77 respectively at \(\mathrm{T}(\mathrm{K})\). The correct option for the \(\mathrm{pH}\) of dimethylammonium acetate solution is:
(1) 6.25
(2) 8.50
(3) 5.50
(4) 7.75
Answer: (4)
Q25. The structure of beryllium chloride in solid-state and vapour phase, are:
(1) Chain in both
(2) Chain and dimer, respectively
(3) Linear in both
(4) Dimer and Linear, respectively
Answer: (2)