IIT JEE (MAIN)
CHEMISTRY MODEL QUESTION PAPER-1

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1) For an irreversible reaction A ----> 2B, the rate is increased by four times when the concentration of A is doubled. The incorrect statement about this reaction is:

1) It is a second order reaction.

2) Half life is independent of initial concentration of A. 

3) The unit of the specific rate, k is L mol^-1 s^-1. 

4) Half life is inversely related to the initial concentration of A.

2) The expected major product formed in the following dehydration reaction is:

3) The correct order of ∠FMF bond angles (where M is the central atom) in NSF₃, SiF₄ and POF₃ is:

1) NSF₃ > SiF₄ > POF₃

2) SiF₄ > NSF₃ > POF₃ 

3) NSF₃ > POF₃ > SiF₄

4) SiF₄ > POF₃ > NSF₃

4) The outer electronic configuration of metal, M in a diamagnetic complex with the formula, M(NH₃)(EtNH₂)BrCl is (n-1)d⁸. It does not give any  precipitate with silver nitrate. The correct statement about this complex among the following is:

1) Exhibits optical activity.

2) The metal, M undergoes sp³ hybridization.

3) Can show geometrical isomerism.

4) Its aqueous solution exhibits electrical conductivity.

5) The correct radial probability distribution curve for the hydrogen atomic orbital with principal quantum number, n = 3 and azimuthal quantum number, l = 2 is: (4πr²ψ² = radial probability density function and r = radial distance from the nucleus)

6) For the vaporization process of HI, the molar entropy and molar enthalpy are respectively, 89.0 J K^-1 mol^-1 and 21.16 kJ mol^-1. The temperature at which the value of ΔG becomes zero for this process is: 

1) 237800 K 

2) 273.8 ^oC 

3) 35.2 K 

4) -35.2 ^oC 

7) The incorrect statement regarding the element Ununseptium is:

a) It belongs to group of halogens. 

b) It belongs to 7th period of periodic table:  

c) It is a radioactive element. 

d) It is a strong metal.

8) The correct IUPAC name of  is:

a) 3,4,9-Trimethyldecane

b) 2-Ethyl-3,7-dimethylnonane 

c) 2,7,8-Trimethyldecane

d) 3,4,9-Trimethylnonane 

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