Periodic Table – JEE Main Previous Year Questions with Solutions
JEE Main Previous Year Papers Questions of Chemistry With Solutions are available at eSaral. Simulator Previous Years AIEEE/JEE Mains Questions
Q. The set representing the correct order of ionic radius is ? (1) $\mathrm{Li}^{+}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}$ (2) $\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}>\mathrm{Li}^{+}>\mathrm{Na}^{+}$ (3) $\mathrm{Li}^{+}>\mathrm{Be}^{2+}>\mathrm{Na}^{+}>\mathrm{Mg}^{2+}$ (4) $\mathrm{Na}^{+}>\mathrm{Li}^{+}>\mathrm{Mg}^{2+}>\mathrm{Be}^{2+}$ [AIEEE 2009]

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Sol. (4)

Q. The correct order of electron gain enthalpy with negative sign of F, Cl, Br and I, having atomic number 9, 17, 35 and 53 respectively, is ? (1) I > Br > Cl > F (2) F > Cl > Br > I (3) Cl > F > Br > I (4) Br > Cl > I > F [AIEEE 2011]

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Sol. (3)

Q. The increasing order of the ionic radii of the given isoelectronic species is ? (1) $\mathrm{K}^{+}, \mathrm{S}^{2-}, \mathrm{Ca}^{2+}, \mathrm{Cl}^{-}$ (2) $\mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{K}^{+}, \mathrm{S}^{2-}$ (3) $\mathrm{S}^{2-}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}, \mathrm{K}^{+}$ (4) $\mathrm{Ca}^{2+}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{S}^{2-}$ [AIEEE 2012]

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Sol. (4)

Q. Which of the following represents the correct order of increasing first ionization enthalpy for Ca, Ba, S, Se and Ar ? (1) Ca < S < Ba < Se < Ar (2) S < Se < Ca < Ba < Ar (3) Ba < Ca < Se < S < Ar (4) Ca < Ba S < Se < Ar [JEE-Main 2013]

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Sol. (3)

Q. The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of $\mathrm{Na}^{+}$ will be? (1) – 2.55 eV (2) – 5.1 eV (3) – 10.2 eV (4) + 2.55 eV [JEE-Main 2013]

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Sol. (4)

Q. Electron gain enthalpy with negative sign of fluorine is less than that of chlorine due to: (1) Smaller size of chlorine atom (2) Bigger size of 2p orbital of fluorine (3) High ionization enthalpy ol fluorine (4) Smaller size of fluorine atom [JEE-MAIN 2013 (OnLine)]

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Sol. (4)

Q. The order of increasing sizes of atomic radii among the elements O, S, Se and As is ? (1) As < S < O < Se (2) O < S < As < Se (3) Se < S < As < O (4) O < S < Se < As [JEE-MAIN 2013 (OnLine)]

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Sol. (4)

Q. Which is the correct order of second ionization potential of C, N, O and F in the following? (1) O > F > N > C (2) O > N > F > C (3) C > N > O > F (4) F > O > N > C [JEE-MAIN 2013 (OnLine)]

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Sol. (1)

Q. Which of the following series correctly represents relations between the elements from X to Y ? [JEE-MAIN 2014 (OnLine)]

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Sol. (3)

Q. Which of the following atoms has the highest first ionization energy ? (1) Sc (2) Rb (3) Na (4) K [JEE-MAIN 2016]

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Sol. (1) Due to poor shielding of d-electrons in Sc, $Z_{\mathrm{eff}}$ of Sc becomes more so that ionisation energy of Sc is more than Na, K and Rb.

Q. The group having isoelectronic species is :- (1) $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}$ (2) $\mathrm{O}^{-}, \mathrm{F}^{-}, \mathrm{Na}, \mathrm{Mg}^{+}$ (3) $\mathrm{O}^{2-}, \mathrm{F}^{-}, \mathrm{Na}, \mathrm{Mg}^{2+}$ (4) $\mathrm{O}^{-}, \mathrm{F}^{-}, \mathrm{Na}^{+}, \mathrm{Mg}^{2+}$ [JEE-MAIN 2017]

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Sol. (1)

• September 23, 2021 at 6:58 pm

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1
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115
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1
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• March 24, 2021 at 8:16 pm

4
• February 23, 2021 at 10:34 pm

Thanks

3
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1
• January 22, 2021 at 3:44 pm

Good for preparation

1
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18
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55
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1
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32
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1
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2
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0
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1
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0
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Can you please make question more upto up

0
• October 17, 2020 at 11:31 pm

Answer of fifth question is incorrect
Good and use ful

0
• October 6, 2020 at 12:42 pm

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0
• October 5, 2020 at 12:35 pm

0
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0
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0
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0
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0
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0
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0
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In question number 5
B

8
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3
• August 30, 2020 at 5:02 pm

0
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0
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0
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0
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0
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0
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0
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0
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0
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Thanks

0
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Help full questions to all ,thanks

0
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Bring some other questions asked in jee mains

0
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0
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0
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0
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0
• June 16, 2020 at 6:30 pm

0
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0
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0
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0
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0
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0
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Need more questions …

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• May 26, 2020 at 8:09 pm

0
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Thanks

0
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0
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Need more questions but good

0
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0
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0
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0
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0
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0
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