JEE MAINS 2027-28 PYQs & MOCK TEST PAPER
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Question ⁉️
A block of mass m is attached to a spring of spring constant k and executes SHM. The time period is: 0
Question ⁉️
In Young’s double slit experiment, if slit separation is doubled, fringe width becomes:
Question ⁉️
Which among the following has maximum acidic strength?
Question.
The current flowing through a conductor is 2 A when connected to 10 V. What is its resistance?
Work done by a force is zero when angle between force and displacement is:
Question ⁉️
A charged particle enters a uniform magnetic field with velocity perpendicular to the field. The kinetic energy of the particle during its motion:
Question ⁉️
A body is moving in a circular path with constant speed. Which of the following quantities remains constant?
Question ⁉️
A charged particle enters a uniform magnetic field with velocity perpendicular to the field. The kinetic energy of the particle during its motion:
Question ⁉️
A solid sphere and a solid cylinder, both having the same mass and radius, roll down the same inclined plane without slipping from the same height. Which one reaches the bottom first?
Question ⁉️
The major product formed when propene reacts with HBr in the presence of peroxide is:
Question ⁉️
A particle is projected vertically upward with speed u. The ratio of the distances covered in the last second and the first second of its motion is 1 : 5. Find the time of ascent.
question ⁉️
A charge +Q is placed at the center of a cube. The electric flux passing through one face of the cube is:
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Question ⁉️
The molar conductivity (Λm) of a weak electrolyte at infinite dilution is determined using:
Question ⁉️
A particle is projected vertically upward with speed u. The ratio of the distances covered in the last second and the first second of its motion is 1 : 5. Find the time of ascent.
Question.
If the net force on a body is zero, then:
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The IUPAC name of CH₃–CH₂–CHO is:
A. Propanone
B. Propanal
C. Ethanal
D. Methanal
✅ Answer: B. Propanal
. Which of the following is a strong electrolyte?
A. Acetic acid
B. Urea
C. NaCl
D. Glucose
✅ Answer: C. NaCl
Which metal shows variable oxidation states?
A. Sodium
B. Magnesium
C. Aluminium
D. Iron
✅ Answer: D. Iron
