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Guinness World Records (General Knowledge Focus) MCQs with Answers & Explanations (Page 142)

World Records & Superlatives  · General Knowledge

10,583 Questions • 7938 Mins Practice • Updated for 2026 Competitive Exams
10583 MCQs
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Solved Questions

10583 Questions
2821
Which of the following is the correct name of CH3CH2CH2COCH2CHO?
2822
Which of the following is also called silver mirror test?
2823
Which of the following proteins acts as carrier of copper in blood plasma?
2824
A fireman wants to slide down a rope. The breaking load of the rope is 3/4 th of the weight of the man. With what acceleration should the fire man slide down? ( Acceleration due to gravity is 'g')
2825
When a heavy coin falls a short distance towards the ground it does not reach terminal velocity. Why is this so?
2826
Which of the following increase by increasing amplitude?
2827
An airplane travels at a speed of 0.5v where v is the speed of sound. The airplane approaches a stationary observer. The frequency of sound emitted by the aircraft is 200 Hz. Which frequency does the observer hear?
2828
If the wavelength of light coming from a galaxy shifts towards the red end of spectrum, then galaxy is:
2829
The mechanical waves are not generated by:
2830
A distant star is receding from the Earth with a speed of 1.40 × 10⁷ m/s. It emits light of frequency 4.57 × 10¹⁴ Hz. The speed of light is 3.0 × 10⁸ m/s. The Doppler effect formula can be used with light waves. What will be the frequency of this light when detected on Earth?
2831
When a gas is compressed isothermally, the product of its pressure and volume during the process is:
2832
Gauss law cannot be used to find which of the following quantity?
2833
A 3 V battery is connected in series with ammeter and 2 ohm resistance after short circuiting. What will be the reading of ammeter?
2834
A low voltage supply with an e.m.f. of 20 V and an internal resistance of 1.5 ohms is used to supply power to a heater of resistance 6.5 ohms in a fish tank. What is the power supplied to the water in the fish tank?
2835
The magnetic field inside a solenoid is:
2836
The magnetic field of a current carrying conductor is due to:
2837
A transformer has 100 turns in the primary coil and 200 turns in the secondary coil. The primary coil is connected to a 6 V battery. The voltage in the secondary coil would be:
2838
A step up transformer has a turn ratio of 1:100. An alternating voltage of amplitude 20 V is connected to the primary. The amplitude of secondary voltage is:
2839
Which of the following is the SI unit of magnetic induction?
2840
A 100 W lamp is operated by 240 V a.c mains. The peak value of current is: