Sujeet Kumar

Chapter 1 Living world 1. Choose correct option. Question (A)Which is not a property of living beings?(a) Metabolism(b) Decay(c) Growth(d) ReproductionAnswer:(b) Decay Question (B)A particular plant is strictly seasonal plant. Which one of the following is best suited if it is to be studied in the laboratory?(a) Herbarium(b) Museum(c) Botanical garden(d) Flower exhibitionAnswer:(a) Herbarium Question … Read more

1. Choose the correct option. Question 1.Range of temperature in a clinical thermometer, which measures the temperature of human body, is(A) 70 ºC to 100 ºC(B) 34 ºC to 42 ºC(C) 0 ºF to 100 ºF(D) 34 ºF to 80 ºFAnswer:(B) 34 ºC to 42 ºC Question 2.A glass bottle completely filled with water is … Read more

Chapter 14 Semiconductors 1. Choose the correct option. Question 1.Electric conduction through a semiconductor is due to:(A) Electrons(B) holes(C) none of these(D) both electrons and holesAnswer:(D) both electrons and holes Question 2.The energy levels of holes are:(A) in the valence band(B) in the conduction band(C) in the band gap but close to valence band(D) in … Read more

Chapter 13 Electromagnetic Waves and Communication System 1. Choose the correct option. Question 1.The EM wave emitted by the Sun and responsible for heating the Earth’s atmosphere due to the greenhouse effect is(A) Infra-red radiation(B) X-ray(C) Microwave(D) Visible lightAnswer:(A) Infra-red radiation Question 2.Earth’s atmosphere is richest in(A) UV(B) IR(C) X-ray(D) MicrowavesAnswer:(B) IR Question 3.How does … Read more

1. Choose the correct option. Question 1.Let r be the distance of a point on the axis of a bar magnet from its center. The magnetic field at r is always proportional to Question 2.Magnetic meridian is the plane(A) perpendicular to the magnetic axis of Earth(B) perpendicular to geographic axis of Earth(C) passing through the … Read more

1. Choose the correct Alternative. Question 1.You are given four bulbs of 25 W, 40 W, 60 W, and 100 W of power, all operating at 230 V. Which of them has the lowest resistance?(A) 25 W(B) 40 W(C) 60 W(D) 100 WAnswer:(D) 100 W Question 2.Which of the following is an ohmic conductor?(A) transistor(B) … Read more

Chapter 10 Electrostatics 1. Choose the correct option. Question 1.A positively charged glass rod is brought close to a metallic rod isolated from the ground. The charge on the side of the metallic rod away from the glass rod will be(A) same as that on the glass rod and equal in quantity(B) opposite to that … Read more

1. Multiple Choise Questions Question 1.As per the recent understanding, light consists of(A) rays(B) waves(C) corpuscles(D) photons obeying the rules of wavesAnswer:(D) photons obeying the rules of waves Question 2.Consider the optically denser lenses P, Q, R, and S drawn below. According to the Cartesian sign convention which of these have a positive focal length? … Read more

Chapter 8 Sound 1. Choose the correct alternatives Question 1.A sound carried by the air from a sitar to a listener is a wave of the following type.(A) Longitudinal stationary(B)Transverse progressive(C) Transverse stationery(D) Longitudinal progressiveAnswer:(D) Longitudinal progressive Question 2.When sound waves travel from air to water, which of these remains constant?(A) Velocity(B) Frequency(C) Wavelength(D) All … Read more

Chapter 6 Mechanical Properties of Solids 1. Choose the correct answer: Question 1.Change in dimensions is known as …………..(A) deformation(B) formation(C) contraction(D) strain.Answer:(A) deformation Question 2.The point on stress-strain curve at which strain begins to increase even without increase in stress is called…………(A) elastic point(B) yield point(C) breaking point(D) neck pointAnswer:(B) yield point Question 3.Strain … Read more