NEET WEEKLY TEST CHEMISTRY 15.02.2025

Welcome to your NEET WEEKLY TEST CHEMISTRY 15.02.2025

Name

ZZR ID

1. Which of the following is the strongest base?

a) Tm (OH)₃b) La(OH)₃
c) Lu(OH)₃d) Yb(OH)₃

(a)

(b)

(c)

(d)

None

2. The stable oxidation state of Ce (Z = 58) is

a) +4
b) +3
c) +2
d) +5

(a)

(b)

(c)

(d)

None

3. The correct order of ionic radii of Y³⁺, La³⁺, Eu³⁺ and Lu³⁺ is :

a) Y³⁺ < La³⁺ < Eu³⁺ < Lu³⁺
b) Y³⁺ < Lu³⁺ < Eu³⁺ < La³⁺
c) Lu³⁺ < Eu³⁺ < La³⁺ < Y³⁺
d) La³⁺ < Eu³⁺ < Lu³⁺ < Y³⁺

(a)

(b)

(c)

(d)

None

4. The maximum oxidation state exhibited by actinide ions is

a) +5
b) +4
c) +7
d) +8

(a)

(b)

(c)

(d)

None

5. α-D- Glucose and β-D-Glucose differ from each other with respect to the

a) Number of OH Group
b) Configuration at the C-5 carbon
c) Configuration at the C-1 carbon
d) Number of H group

(a)

(b)

(c)

(d)

None

6. Choose the incorrect statement about Glucose

a) It give 2,4- DNP Test and Schiff’s test
b) D-(+)- Glucose exists in two stereoisoimeric forms
c) On heating with HI, it forms n-hexane
d) It is present in Furanose form

(a)

(b)

(c)

(d)

None

7. Deficiency of vitamin D leads to disease

a) Scurvy
b) Beri-Beri
c) Rickets
d) Glossitis

(a)

(b)

(c)

(d)

None

8. Glucose on prolonged heating with HI gives

a) n-Hexane
b) Hexanoic acid
c) Gluconic Acid
d) Sorbitol

(a)

(b)

(c)

(d)

None

9. Deficiency of which vitamin causes Osteomalacia?

a) Vitamin D
b) Vitamin B
c) Vitamin K
d) Vitamin E

(a)

(b)

(c)

(d)

None

10. Which of the following is water soluble Vitamin?

a) Vitamin A
b) Vitamin B
c) Vitamin K
d) Vitamin H

(a)

(b)

(c)

(d)

None

11. Which one of the following sets of Monosaccharides forms Sucrose?

a) α-D- Galactopyranose and β-D- Glucopyranose
b) α-D- Glucopyranose and β-D- Fructopyranose
c) β -D- Glucopyranose and α -D- Glucopyranose
d) α-D- Glucopyranose and β-D- Fructofuranose

(a)

(b)

(c)

(d)

None

12. Which one is a non – reducing sugar?

a) Glucose
b) Fructose
c) Sucrose
d) Maltose

(a)

(b)

(c)

(d)

None

13. Which order of basicity is correct?

a) Aniline > m-toluidine > o-toluidine
b) Aniline > o-toluidine > m-toluidine
c) o-toluidine > aniline > m-toluidine
d) o-toluidine < aniline < m-toluidine

(a)

(b)

(c)

(d)

None

14. Which of the following compounds cannot be identified by carbylamine test?

a) CH₃CH₂NH₂
b) C₆H₅CH₂NH₂
c) C₆H₅NH₂
d) C₆H₅NH – C₆H₅

(a)

(b)

(c)

(d)

None

15. In the following sequence of reactions, the structure of the product D would be

a) C₆H₅CH₂OH
b) C₆H₅CH₂NH₂
c) C₆H₅NHOH
d) C₆H₅NHCH₂CH₃

(a)

(b)

(c)

(d)

None

16. Identify compound X?

a) SnCl₂b) OH
c) NH₂d) Cl

(a)

(b)

(c)

(d)

None

17. The product of the reaction

(a)

(b)

(c)

(d)

None

18. The reagent ‘R’ in the given sequence of chemical reaction is:

a) CuCN/KCN
b) H₂O
c) CH₃CH₂OH
d) HI

(a)

(b)

(c)

(d)

None

19. The product obtained when methylamine (CH₃NH₂) is treated with nitrous acid is:

a) CH₃OH
b) CH₃-O-N=O
c) CH₃OCH₃
d) CH₃N₂Cl

(a)

(b)

(c)

(d)

None

20. The correct order of the basic strength of methyl substituted amines in aqueous solution is:

a) (CH₃)₂NH > CH₃NH₂> (CH₃)₃N
b) (CH₃)₃N > CH₃NH₂> (CH₃)₂NH
c) (CH₃)₃N > (CH₃)₂NH > CH₃NH₂
d) None of the above

(a)

(b)

(c)

(d)

None

21. Which of the following compound gives dye test

a) Aniline
b) Methylamine
c) Diphenylamine
d) Ethylamine

(a)

(b)

(c)

(d)

None

22. The correct statement regarding the basicity of arylamines is:

a) Arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is sp-hybridised.

b) Arylamines are generally less basic than alkylamines because the nitrogen lone pair electrons are delocalized by interaction with the aromatic ring a electrons system.

c) Arylamines are generally more basic than alkylamines because the nitrogen lone pair electrons are not delocalised by interaction with the aromatic ring electron system.

d) Arylamines are generally more basic than alkylamines because of aryl group.

(a)

(b)

(c)

(d)

None

23. Identify the compound that will react with Hinsberg’s reagent to give a solid which dissolves in alkali.

(a)

(b)

(c)

(d)

None

24. A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in the internal energy in Joule is?

a) -50
b) 50
c) 100
d) -175

(a)

(b)

(c)

(d)

None

25. Calculate the heat of formation of methane from the following data

(i) CH₄(g) + 2O₂(g) ⇢ CO₂ (g) + 2H₂O(g); ∆H = -890.65 kJ/mol
(ii) H₂(g) + 1/2 O₂(g) ⇢ H₂O (l), ∆H = -285.84 kJ/mol
(iii) C (graphite) + O₂(g) ⇢ CO₂(g), ∆H = -393.51 kJ/mol

a) +74.54 kJ/mol
b) -74.54 kJ/mol
c) +333.68 kJ/mol
d) -333.68 kJ/mol

(a)

(b)

(c)

(d)

None

26. If 10 kJ of work is done on the system then 2 kcal heat is released by the system then change in internal energy is? (1cal = 4.2 J)

a) 1.6 J
b) 1.6 cal
c) 1600 cal
d) 1600 J

(a)

(b)

(c)

(d)

None

27. The enthalpy of vapourisation of H₂O (l) is x kJ/mol and enthalpy of formation of water vapour is y kJ/mol. Enthalpy of formation of H₂O (l) would be

a) (y-x) kJ/mol
b) (x-y) kJ/mol
c) (x+y) kJ/mol
d) (2x-y) kJ/mol

(a)

(b)

(c)

(d)

None

28. A system absorbs 10 kJ of heat at constant volume and its temperature rises from 270°C to 370°C. The value of ∆U is?

a) 5 kJ
b) -5 kJ
c) 10 kJ
d) -10 kJ

(a)

(b)

(c)

(d)

None

29. Match list II and List II

A) (a) – (i), (b) – (ii), (c) – (iv), (d) – (iii)
B) (a) – (i), (b) – (iii), (c) – (iv), (d) – (ii)
C) (a) – (ii), (b) – (iii), (c) – (iv), (d) – (i)
D) (a) – (ii), (b) – (iii), (c) – (i), (d) – (iv)

(a)

(b)

(c)

(d)

None

30. At constant volume, 5 mol gas show increase in temperature by 3.5 K on providing 437.5 J heat, then what will be the heat capacity for gas at constant pressure?

a) 10 J/K mol
b) 33.3 J/K mol
c) 24.6 J/K mol
d)18.8 J/K mol

(a)

(b)

(c)

(d)

None

31. For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ∆U and W correspond to?

a) ∆U < 0, W = 0
b) ∆U < 0, W < 0
c) ∆U > 0, W = 0
d) ∆U > 0, W > 0

(a)

(b)

(c)

(d)

None

32. Based on following thermo chemical reactions
H₂O(g) + C(s)⇢CO(g) + H₂(g); ∆H = 131 kJ .. (i)
CO(g) + O₂(g)⇢CO₂(g); ∆H = -282 kJ …….. (ii)
H₂(g) + O₂(g)⇢H₂O (g); ∆H = -242 kJ …….. (iii)
C(s) + O₂(g)⇢CO₂(g); ∆H = x kJ …………….. (iv)
The value of ‘x’ will be?

a) -426 kJ/mol
b) -393 kJ/mol
c) 426 kJ/mol
d) 393 kJ/mol

(a)

(b)

(c)

(d)

None

33. In adiabatic reversible conditions, 1 mole of CO₂ gas at 300 K is expanded such that its volume becomes 27 times. Then the work done is? (Cv = 6 cal/mol and γ = 1.33)

a) 900 cal
b) 1000 cal
c) 1200 cal
d) 1400 cal

(a)

(b)

(c)

(d)

None

34. The combination of plots which does not represent isothermal expansion of an ideal gas is

a) (A) and (C)
b) (A) and (D)
c) (B) and (C)
d) (B) and (D)

(a)

(b)

(c)

(d)

None

35. The given plots represent the variation of the concentration of a reactant R with time for two different reactions (i) and (ii). The respective orders of the reactions are

a) 1, 0
b) 0, 1
c) 1, 1
d) 0, 0

(a)

(b)

(c)

(d)

None

36. The provided graph illustrates a reaction’s kinetics

The y and x axes for zero and first-order reactions, respectively are

a) Zero order (y = rate and x = concentration), first order (y = t_1/2and x = concentration)
b) Zero order (y = rate and x = concentration), first order (y = rate and x = t_1/2)
c) Zero order (y = concentration and x = time), first order (y = t_1/2and x = concentration)
d) Zero order (y = concentration and x = time), first order (y = rate constant and x = concentration)

(a)

(b)

(c)

(d)

None

37. When the initial concentration of the reactant is double, the half-life period of the reaction is

a) halved
b) doubled
c) tripled
d) remained unchanged

(a)

(b)

(c)

(d)

None

38. In the rate equation, when the concentration of reactants is unity then the rate is equal to

a) Specific rate constant
b) Average rate constant
c) Instantaneous rate constant
d) None of the above

(a)

(b)

(c)

(d)

None

39. In the reaction 2A + B → A₂B, if the concentration of A is doubled and that of B is halved, then the rate of the reaction will be

a) Increase 2 times
b) Decrease 2 times
c) Increase 3 times
d) Decrease 3 times

(a)

(b)

(c)

(d)

None

40. For a general reaction A → B, plot of the concentration of A versus time is given in the figure. What is the slope of the curve?

(a)

(b)

(c)

(d)

None

41. Which of the following is correct w.r.t the following graphs?

a) I represent zero order of the reaction.
b) II represents zero order of the reaction
c) III represents 1st order of the reaction
d) All represent zero order reaction

(a)

(b)

(c)

(d)

None

42. For an elementary chemical reaction, A→ B, the rate of the reaction doubles when the concentration of A is increased four times. The order for this reaction with respect to A is

a) 2
b) 1
c) 1/2
d) 0

(a)

(b)

(c)

(d)

None

43.

a) 2.6 x 10^-2b)5.2 x 10^-2
c) 1.0 x 10^–1
d) 6.5 x 10^-3

(a)

(b)

(c)

(d)

None

44. On which of the following factors, the rate constant does not depend?

a) Temperature
b) Concentration
c) Presence of catalyst
d) Nature of reactants.

(a)

(b)

(c)

(d)

None

45. For the reaction 2A+ B → 3C + D, which of the following does not express the reaction rate?

(a)

(b)

(c)

(d)

None

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NEET WEEKLY TEST CHEMISTRY 15.02.2025

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