Preference

Question: Which of the following can be used both as an oxidizing agent and as a reducing agent?

  1. a.
    sodium nitrite
  2. b.
    sodium sulphide
  3. c.
    sodium thiosulphate
  4. d.
    sodium nitrate
  5. e.
    None
Answer: d

Question: Eugenics is the study of---

  1. a.
    Different races of mankind
  2. b.
    Genetics of plants
  3. c.
    Alteringhumans beings by changing their genetic components
  4. d.
    People of European
  5. e.
    None of these
Answer: c

Question: দিন-রাত্রি সমান থাকে কোন তারিখে?

  1. a.
    ২১ জুন ও ২২ ডিসেম্বর
  2. b.
    ২২ ডিসেম্বর ও ২২ ফেব্রুয়ারি
  3. c.
    ২৩ সেপ্টেম্বর ও ২১ মার্চ
  4. d.
    ২১ মে ও ২১ জুলাই
Answer: c

Question: Which instrument is used to measure pressure?

  1. a.
    Saccharimeter
  2. b.
    Ammeter
  3. c.
    Manometer
  4. d.
    Lactometer
  5. e.
    None of these
Answer: c

Question: The three methods of science are observation, experimentation and ----.

  1. a.
    deduction
  2. b.
    hypothesis
  3. c.
    measurement
  4. d.
    inference
  5. e.
    none of these
Answer: c

Question: The unit of energy in MKS system is--

  1. a.
    Volt
  2. b.
    Erg
  3. c.
    Ohm
  4. d.
    Joule
  5. e.
    None of these
Answer: d

Question: The earth rotates from---

  1. a.
    south to north
  2. b.
    west to east
  3. c.
    east to west
  4. d.
    north to south
  5. e.
    none of these
Answer: b

Question: Which one of the following is responsible for the depletion of ozone layer?

  1. a.
    PAN
  2. b.
    sulphur oxide
  3. c.
    chloroflurocarbons
  4. d.
    methane
  5. e.
    none of these
Answer: c

Question: Anatomy is the branch of science which deals with--

  1. a.
    Animal behavior
  2. b.
    Cells and tissues
  3. c.
    Structure of animals and plants
  4. d.
    Functioning of body organs
  5. e.
    None of these
Answer: c

Question: Ecology deals with---

  1. a.
    Relation between Organisms and their environment
  2. b.
    Tissues
  3. c.
    Birds
  4. d.
    Cell formation
  5. e.
    None of these
Answer: a

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