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Work done by a force is zero when angle between force and displacement is:
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 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
Question:128. What is the value of i^100 + i^101 + i^102 + i^103? (Where i = √-1)
Question:127. What is the probability of getting a sum of 7 when two dice are thrown together?
Question ⁉️ pH of 0.001 M HCl is:
Question ⁉️ Which has maximum bond order?
Question ⁉️ Among the following species, which has the maximum number of unpaired electrons?
question ⁉️ pH of a neutral solution at 25°C is:
Question. If the function f(x) = x³ - 3x² + 4 is increasing in the interval:
Question ❓ If the vectors a = i + 2j + 3k and b = 2i + 3j + λk are perpendicular, then λ is: