Other Chemistry · JEE Main previous year questions

650 questions asked across 20 exam years, newest first

Other Chemistry has appeared 650 times in JEE Main papers between 2002 and 2026, about 4.7 questions per paper, from 25 per paper in 2002 to 2.6 per paper in 2026. Every question is listed below with its answer and the paper it came from. Use Practise this topic to attempt them as a timed set.

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2019 55 questions

Q692019 · 8 Apr 2019 · Shift 2
The compound that inhibits the growth of tumors is :
1. A.cis- $[Pd (Cl)_{2} (N H_{3})_{2}]$
2. B.trans- $[Pd (Cl)_{2} (N H_{3})_{2}]$
3. C.cis- $[Pt (Cl)_{2} (N H_{3})_{2}]$
4. D.trans- $[Pt (Cl)_{2} (N H_{3})_{2}]$
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Answer: C
Q722019 · 8 Apr 2019 · Shift 2
The statement that is INCORRECT about the interstitial compounds is :
1. A.They are chemically reactive
2. B.They have metallic conductivity
3. C.They have high melting points
4. D.They are very hard
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Answer: A
Q772019 · 8 Apr 2019 · Shift 2
For a reaction scheme $A k_{1} B k_{2} C$ , if the rate of formation of B is set to be zero then the concentration of B is given by :
1. A. $k_{1} k_{2} [A]$
2. B. $(\frac{k _{1}}{k _{2}}) [A]$
3. C. $(k_{1} + k_{2}) [A]$
4. D. $(k_{1} - k_{2}) [A]$
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Answer: B
Q782019 · 8 Apr 2019 · Shift 2
Which of the following compounds will show the maximum 'enol' content?
1. A. $C H_{3} COC H_{3}$
2. B. $C H_{3} COC H_{2} COC H_{3}$
3. C. $C H_{3} COC H_{2} COO C_{2} H_{5}$
4. D. $C H_{3} COC H_{2} CON H_{2}$
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Answer: B
Q822019 · 8 Apr 2019 · Shift 2
If p is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength $λ$ , then for 1.5 p momentum of the photoelectron, the wavelength of the light should be: (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function)
1. A. $1/2 λ$
2. B. $3/4 λ$
3. C. $4/9 λ$
4. D. $2/3 λ$
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Answer: C
Q832019 · 8 Apr 2019 · Shift 2
Polysubstitution is a major drawback in:
1. A.Reimer Tiemann reaction
2. B.Friedel Craft's alkylation
3. C.Acetylation of aniline
4. D.Friedel Craft's acylation
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Answer: B
Q872019 · 8 Apr 2019 · Shift 2
0.27 g of a long chain fatty acid was dissolved in $100 c m^{3}$ of hexane. 10 mL of this solution was added dropwise to the surface of water in a round watch glass. Hexane evaporates and a monolayer is formed. The distance from edge to centre of the watch glass is 10 cm. What is the height of the monolayer? [Density of fatty acid = $0.9 g c m^{- 3}$ , $π = 3$ ]
1. A. $1 0^{- 8} m$
2. B. $1 0^{- 2} m$
3. C. $1 0^{- 4} m$
4. D. $1 0^{- 6} m$
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Answer: D
Q902019 · 8 Apr 2019 · Shift 2
The strength of 11.2 volume solution of $H_{2} O_{2}$ is : [Given that molar mass of H = $1 g mo l^{- 1}$ and O = $16 g mo l^{- 1}$ ]
1. A.3.4%
2. B.34%
3. C.13.6%
4. D.1.7%
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Answer: A
Q632019 · 12 Jan 2019 · Shift 1
The element with Z = 120 (not yet discovered) will be an/a -
1. A.Alkaline earth metal
2. B.Alkali metal
3. C.Transition metal
4. D.Inner transition metal
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Answer: A
Q642019 · 12 Jan 2019 · Shift 1
What is the work function of the metal if the light of wavelength $4000 \overset{˚}{A}$ generates photoelectrons of velocity $6 \times 1 0^{5} m s^{- 1}$ from it ? (Mass of electron $= 9 \times 1 0^{- 31} kg$ ; Velocity of light $= 3 \times 1 0^{8} m s^{- 1}$ Plank's constant $= 6.626 \times 1 0^{- 34} Js$ ; Charge of electron $= 1.6 \times 1 0^{- 19} Je V^{- 1}$ )
1. A. $4.0 eV$
2. B. $0.9 eV$
3. C. $2.1 eV$
4. D. $3.1 eV$
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Answer: C
Q722019 · 12 Jan 2019 · Shift 1
The hardness of a water sample (in terms of equivalents of $CaC O_{3}$ ) containing $1 0^{- 3} M CaS O_{4}$ is (Molar mass of $CaS O_{4} = 136 g mo l^{- 1}$ )
1. A. $90 ppm$
2. B. $100 ppm$
3. C. $50 ppm$
4. D. $10 ppm$
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Answer: B
Q802019 · 12 Jan 2019 · Shift 1
$M n_{2} (CO)_{10}$ is an organometallic compound due to the presence of -
1. A. $C - O$ bond
2. B. $Mn - Mn$ bond
3. C. $Mn - O$ bond
4. D. $Mn - C$ bond
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Answer: D
Q672019 · 12 Jan 2019 · Shift 2
The element that does NOT show catenation is :
1. A.Ge
2. B.Si
3. C.Sn
4. D.Pb
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Answer: D
Q732019 · 12 Jan 2019 · Shift 2
The increasing order of the reactivity of the following with $LiAl H_{4}$ is (A) $C_{2} H_{5} CON H_{2}$ (B) $C_{2} H_{5} COOC H_{3}$ (C) $C_{2} H_{5} COCl$ (D) $C_{2} H_{5} CO - O - CO C_{2} H_{5}$
1. A.A < B < C < D
2. B.B < A < C < D
3. C.B < A < D < C
4. D.A < B < D < C
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Answer: D
Q762019 · 12 Jan 2019 · Shift 2
The element that shows greater ability to form $p π$ - $p π$ multiple bonds, is :
1. A.Si
2. B.Ge
3. C.C
4. D.Sn
Show answer
Answer: C
Q872019 · 12 Jan 2019 · Shift 2
The volume strength of 1M $H_{2} O_{2}$ is : (Molar mass of $H_{2} O_{2} = 34 g mo l^{- 1}$ )
1. A.5.6
2. B.22.4
3. C.11.35
4. D.16.8
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Answer: C
Q902019 · 12 Jan 2019 · Shift 2
Among the following the false statement is -
1. A.Lyophilic sol can be coagulated by adding an electrolyte
2. B.Tyndall effect can be used to distinguish between a colloidal solution and a true solution
3. C.It is possible to cause artificial rain by throwing electrified sand carrying charge opposite to the one on clouds from an aeroplane
4. D.Latex is a colloidal solution of rubber particles which are positively charged
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Answer: D
Q652019 · 11 Jan 2019 · Shift 2
The reaction, $MgO (s) + C (s) \to Mg (s) + CO (g)$ , for which $Δ_{r} H^{\circ} = 491.1 kJ mol^{- 1}$ and $Δ_{r} S^{\circ} = 198.0 JK^{- 1} mol^{- 1}$ , is not feasible at 298 K. Temperature above which reaction will be feasible is :
1. A. $2480.3 K$
2. B. $2040.5 K$
3. C. $2380.5 K$
4. D. $1890.0 K$
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Answer: A
Q682019 · 11 Jan 2019 · Shift 2
$\underline{A} 3 \underline{B} 2 \underline{C} 4 KOH, O_{2} (Green) 2 \underline{B} + 2 H_{2} O 4 HCl (Purple) 2 \underline{C} + Mn O_{2} + 2 H_{2} O H_{2} O, KI (Brown) 2 \underline{A} + 2 KOH + \underline{D}$ In the above sequence of reactions, $\underline{A}$ and $\underline{D}$ , respectively, are :
1. A. $KI$ and $KMn O_{4}$
2. B. $KI$ and $K_{2} Mn O_{4}$
3. C. $KI O_{3}$ and $Mn O_{2}$
4. D. $Mn O_{2}$ and $KI O_{3}$
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Answer: D
Q792019 · 11 Jan 2019 · Shift 2
1. A.(b), (c) and (d)
2. B.(a) and (e)
3. C.(a) and (d)
4. D.(a)
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Answer: A
Q822019 · 11 Jan 2019 · Shift 2
The higher concentration of which gas in air can cause stiffness of flower buds?
1. A. $C O_{2}$
2. B. $S O_{2}$
3. C. $N O_{2}$
4. D. $CO$
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Answer: B
Q852019 · 11 Jan 2019 · Shift 2
Taj Mahal is being slowly disfigured and discoloured. This is primarily due to :
1. A.acid rain
2. B.soil pollution
3. C.global warming
4. D.water pollution
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Answer: A
Q652019 · 9 Jan 2019 · Shift 1
Which amongst the following is the strongest acid ?
1. A. $CHB r_{3}$
2. B. $CH I_{3}$
3. C. $CH (CN)_{3}$
4. D. $CHC l_{3}$
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Answer: C
Q812019 · 9 Jan 2019 · Shift 1
The one that is extensively used as a piezoelectric material is :
1. A.tridymite
2. B.amorphous silica
3. C.quartz
4. D.mica
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Answer: C
Q882019 · 9 Jan 2019 · Shift 1
The isotopes of hydrogen are :
1. A.Tritium and protium only
2. B.Protium and Deuterium only
3. C.Protium, deuterium and tritium
4. D.Deuterium and tritium only
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Answer: C