Total Number of Question/s - 4224

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  • 1. Chemical Reactions and Equations - Quiz


    SAMPLE QUESTIONS


    1. The reaction in which a compound is broken down in to two or more substances is known as:
    a) Displacement reaction
    b) Decomposition reaction
    c) Combination reaction
    d) None of these

    2. In order to prevent the spoilage of potato chips, they are packed in plastic in an atmosphere of:
    a) Cl2
    b) H2
    c) N2
    d) O2

  • 2. Acids, Bases and Salts - Quiz


    SAMPLE QUESTIONS


    1. Which of the following are made up of bases?
    a) Toothpaste
    b) Antacid tablets
    c) Soap
    d) All the above

    2. The aqueous solution of one of the following salts will turn litmus to blue. This salt is:
    a) potassium sulphate
    b) sodium sulphate
    c) sodium chloride
    d) potassium carbonate

  • 3. Metals and Non-metals - Quiz


    SAMPLE QUESTIONS


    1. Roasting is generally done in the case of:
    a) Carbonate ores
    b) Silicate ores
    c) Sulphide ores
    d) Oxide ores

    2. Which of the following metals are extracted by the electrolysis of their molten chlorides?
    a) Na and Hg
    b) Hg and Mg
    c) Na and Mg
    d) Cu and Fe

  • 4. Carbon and its Compounds - Quiz


    SAMPLE QUESTIONS


    1. Acetic acid is used as :
    a) food preservative
    b) a coagulant in the rubber industry
    c) a coagulant in tanning of leather
    d) all of these

    2. A hydrocarbon having one double bond has 100 carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be:
    a) 200
    b) 198
    c) 202
    d) 196

  • 5. Periodic Classification of Elements - Quiz


    SAMPLE QUESTIONS


    1. Which pair of the following set of elements likely to have similar chemical behavior?
    a) Sodium and Aluminium
    b) Nitrogen and Phosphorus
    c) Argon and Potassium
    d) Boron and Germanium

    2. The electron configuration of the atom of an element X is 2, 8, 4. In modern periodic table, the element X is placed in:
    a) 2nd group
    b) 4th group
    c) 14th group
    d) 8th group

  • 6. Life Processes - Quiz


    SAMPLE QUESTIONS


    1. In human digestive system, the enzyme pepsin and trypsin are secreated respectively by:
    a) pancreas and liver
    b) stomach and salivary glands
    c) pancreas and fall bladder
    d) stomach and pancreas

    2. Lactic acid accumulation leads to
    a) Kidney fatigue
    b) Liver fatigue
    c) Muscle fatigue
    d) All the above

  • 7. Control and Coordination - Quiz


    SAMPLE QUESTIONS


    1. Which of the following is a mis-matched pair?
    a) adrenaline: pituitary
    b) estrogen : ovary
    c) pancreas : insulin
    d) progrsterone : ovary

    2. Cell elongation in plant is caused by
    a) Florigens
    b) Auxins
    c) Gibberellins
    d) Ethylene

  • 8. How do Organisms Reproduce? - Quiz


    SAMPLE QUESTIONS


    1. Fertilisation results immediately in the formation of:
    a) a zygote
    b) an embryo
    c) a placenta
    d) a foetus

    2. The buds in bryophyyllum are known as
    a) hypophyllous
    b) periphyllous
    c) epiphyllous
    d) none of the above

  • 9. Heredity and Evolution - Quiz


    SAMPLE QUESTIONS


    1. Skin colour in man shows
    a) dominant inheritance
    b) polygenic inheritance
    c) intermediate inheritance
    d) monogenic inheritance

    2. In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2 generation will be:
    a) 1:3
    b) 3:1
    c) 1:1
    d) 2:1

  • 10. Light - Reflection and Refraction - Quiz


    SAMPLE QUESTIONS


    1. Large aperture objectives are used in telescopes because they :
    a) have better dispersion
    b) have less aberration
    c) have better resolution
    d) can see larger objects

    2. A hole is made in a convex lens . Then :
    a) a hole appears in the image
    b) image size decreases
    c) image intensity decreases
    d) no change

  • 11. Human Eye and Colourful World - Quiz


    SAMPLE QUESTIONS


    1. Find the refractive index of glass with respect to water. The refractive indices of these materials with respect to air are 3/2 and 4/3 respectively.
    a) 7/8
    b) 9/8
    c) 8/9
    d) None of these

    2. The animal which does not have eyes that look sideways is:
    a) Horse
    b) Chicken
    c) Lion
    d) Fish

  • 12. Electricity - Quiz


    SAMPLE QUESTIONS


    1. What is irrelevant for an electric fuse?
    a) Radius
    b) Specific resistance
    c) Length
    d) Current flowing through it

    2. A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2 Then the ratio R1 / R2 is:
    a) 1/25
    b) 1/5
    c) 5
    d) 25

  • 13. Magnetic Effects of Electric Current - Quiz


    SAMPLE QUESTIONS


    1. In our domestic electric supply we use following three colours of wire.
    a) black, green, yellow
    b) red, blue, green
    c) red, yellow, blue
    d) red, black, green

    2. An electric generator converts:
    a) electrical energy into mechanical energy
    b) mechanical energy into heat energy
    c) electrical energy into chemical energy
    d) mechanical energy into electrical energy.

  • 14. Sources of Energy - Quiz


    SAMPLE QUESTIONS


    1. Study the following statement and choose the correct answer.
    I. Nuclear forces obey inverse square law
    II. Positron is antiparticle of electron

    a) I.is false, II. Is true
    b) I.Is true, II. Is false
    c) Both are false
    d) Both are true

    2. Which of the following is ultimately not derived from the sun energy (or solar energy)?
    a) wind energy
    b) nuclear energy
    c) biomass energy
    d) ocean thermal energy

  • 15. Our Environment - Quiz


    SAMPLE QUESTIONS


    1. Inhaling cotton dust leads to
    a) byssinosis
    b) asbestosis
    c) silicosis
    d) necrosis

    2. Trophic levels are formed by
    a) only plants
    b) only animals
    c) only carnivores
    d) organsims linked in food chain

  • 16. Management of Natural Resources - Quiz


    SAMPLE QUESTIONS


    1. Sardar Sarovar Dam was constructed on
    a) Ganga
    b) Narmada
    c) Yamuna
    d) Godavari

    2. The poisionous gas which reduces the oxygen-carrying capacity of blood to a large extent is:
    a) SO2
    b) NO
    c) CO
    d) CO2