61 Which of the following has the highest energy? Everyday Science Medium Full question → A gamma rays B X-rays C Ultra-violet radiation D radio waves
62 All of the following are electromagnetic radiations except__________? Everyday Science Medium Full question → A Red light B Sound waves C X-Rays D Photon
63 Second ionization energy: Everyday Science Medium Full question → A is always less than first ionization energy B is always greater than first ionization energy C is equal to the first ionization energy D may be greater or less than the first ionization energy depending on the nature of the element
64 Nuclear radiation is emitted by those elements whose: Everyday Science Medium Full question → A molecules are stable B molecules are unstable C nuclei are stable D nuclei are unstable
65 Color of the glow produced in the discharge tube: Everyday Science Medium Full question → A depends on the pressure in the discharge tube B depends on the metal used as cathode C depends on the gas used in the discharge tube D does not depend on the nature of the gas used in the discharge tube
66 Covalent network crystals have_____________? Everyday Science Medium Full question → A higher melting point then molecular crystals B lower melting point then molecular crystals C discrete molecules linked by Van der waals forces D hydrogen bonding
67 The increasing vapor pressure caused by heating a liquid is due to___________? Everyday Science Medium Full question → A increase inter-molecular interactions B increasing potential energy of molecules C increasing kinetic energy of molecules D decreasing surface tension
68 Rate of evaporation of petrol is greater than that of water at room temperature because: Everyday Science Medium Full question → A petrol molecules do not have any hydrogen bond B petrol is an organic compound C water molecules have small size D petrol molecules have greater size
69 Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to____________? Everyday Science Medium Full question → A hydrogen bonding B irregular shape of the molecules C irregular shape of the molecules and strong inter-molecular forces D greater molecular size
70 All of the following substances are crystalline except_____________? Everyday Science Medium Full question → A Ice B Diamond C Sucrose D Plastic
71 Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________? Everyday Science Medium Full question → A ionic substances B metallic substances C molecular solids D covalent network solids
72 Which of the following is a substance? Everyday Science Medium Full question → A Sea water B Brass C Tape water D Graphite
73 An atom is_____________? Everyday Science Medium Full question → A smallest indivisible particle in an element B smallest particle of an element which can undergo a chemical reaction C building block of an element D always smaller than molecule
74 All of the following statements are incorrect except: Everyday Science Medium Full question → A Precision and accuracy should go side by side in a scientific work B Scientific work must be precise, accuracy is not essential C Scientific work must be accurate, precision is not essential D Calculations must be made before any experiment
75 The average speed of a moving object during a given interval of time is always: Everyday Science Medium Full question → A the magnitude of its average velocity over the interval B the distance covered during the time interval divided by the time interval C one-half its speed at the end of the interval D its acceleration multiplied by the time interval
76 The SI base unit for mass is_____________? Everyday Science Medium Full question → A Gram B Pound C Kilogram D Ounce
77 Which of the following is closest to a yard in length? Everyday Science Medium Full question → A 0.01m B 0.1m C 1m D 10m
78 Water is a universal solvent for what reactions? Everyday Science Medium Full question → A Chemical B Biochemical C Physical D Nuclear
79 During a total solar eclipse the rate of Photosynthesis___________? Everyday Science Medium Full question → A Increase B Decrease C Remain Constant D None of them
80 Oranges are rich source of____________? Everyday Science Medium Full question → A Carbohydrates B Fats C Proteins D Vitamins