Science : Mock Papers
Mock Question Paper 1
Q1. Which of the following is the lightest metal?
A. Mercury
B. Silver
C. Lithium
D. Lead
Q2. The most important ore of aluminium is
A. Bauxite
B. Calamine
C. Calcite
D. Galena
Q3. Diamond is an allotropic form of
A. Silicon
B. Carbon
C. Sulphur
D. Germanium
Q4. The filament of an electric bulb is made of
A. Iron
B. Nichrome
C. Tungsten
D. Graphite
Q5. The two elements that are frequently used for making transistor are
A. Boron and Alumimium
B. Sillicon and Germanium
C. Iridium and Tungsten
D. Niobium and Columbium
Q6. Bleaching powder is made from
A. Sulphur dioxide and Gypsum
B. Chlorine and Charcoal
C. Soda ash and Lime
D. Lime and chlorine
Q7. Monazite is an ore of
A. Iron
B. titanium
C. Thorium
D. Zirconium
Q8. Potassium permanganate is used for purifying drinking water, because
A. It dissolves the impurities of water
B. It is a sterlising agent
C. It is an oxidising agent
D. It is a reducing agent
Q9. The hardest substance available on earth is
A. Platinum
B. Coal
C. Diamond
D. Gold
Q10. Which among the following is a positively charged particle emitted by a radioactive element?
A. Alpha ray
B. Beta ray
C. Gamma Ray
D. Cathode ray
Q11. Nuclear fission is caused by the impact of
A. Proton
B. Electron
C. Neutron
D. None of these
Q12. How many colours the sunlight spectrum has?
A. Five
B. Three
C. Seven
D. Four
Q13. Optic fibres are mainly used for which of the following?
A. Communication
B. Weaving
C. Musical Instruments
D. Food industry
Q14. Detergents used for cleaning clothes and utensils contain
A. Nitrates
B. Bicarbonates
C. Sulphonates
D. Bismuthates
Q15. Which of the fowllowing is used in making artificial sweetener saccharin?
A. Benzene
B. Toluene
C. Phenol
D. Aniline
Q16. Which of the following is a physical change?
A. Oxidation
B. Reduction
C. Sublimation
D. Decomposition
Q17. Catalytic properties of substance may be best defined as a phenomenon of
A. Absorption
B. Chemisorption
C. Adsorption
D. None of these
Q18. In which of the following processes light energy is converted in chemical energy?
A. Respiration
B. Fermentation
C. Photosynthesis
D. Photorespiration
Q19. One horse power is equal to
A. 736 watts
B. 746 watts
C. 748 watts
D. 756 watts
Q20. 'Bar' is the unit of
A. Heat
B. Temperature
C. Current
D. Atmospheric pressure
Q21. A Chronometer measures
A. Sound waves
B. Time
C. Water waves
D. colour contrast
Q22. The principle of working of periscope is based on
A. Reflection only
B. Refraction only
C. Reflection and refraction
D. Reflection and interference
Q23. The working of the quartz crystal in the watch is based on
A. Johnson effect
B. Photoelectric effect
C. Edison effect
D. Piezo Electric effect
Q24. A hand written message can be instantly transmitted as such to any part of the world through
A. Speed post
B. Telex
C. Electronic mail
D. FAX
Q25. which of the following pairs of materials serves as electrodes in chargeable batteries commonly used in devices such as torch lights, electric shavers etc?
A. Iron and cadmium
B. Nickel and cadmium
C. Lead peroxide and lead
D. zinc and carbon
Q26. By the use of which of the following can the conversion of heat energy to electrical energy be achieved?
A. Thermo-couple
B. Triode valve
C. Photoelectric tube
D. None of these
Q27. The technique used to transmit audio signals in television broadcasts is
A. Amplitude Modulation
B. Frequency Modulation
C. Pulse Code Modulation
D. Time Division Multiplexing
Q28. The tooth with three roots is
A. Molar
B. Pre-molar
C. Incisor
D. Canine
Q29. In mammals, the part of the brain that has reached highest level of development and that has enabled humans to grow their own crop invent machines, develop language and art is
A. Cerebrum
B. Cerebellum
C. Medula Oblangata
D. None of these
Q30. A person will have brown eyes, blue eyes or black eyes depending upon the particular pigment present in the
A. Pupil
B. Cornea
C. Iris
D. Choroid