Daily GK Challenge

More practice: Science & Technology GK

5 more SSC / Banking questions from the same chapter, with step-by-step solutions. Try each one, then reveal the answer.

1. Q1easy

   Which blood group is known as the universal donor?

   • AAB positive
   • BA positive
   • CO negative
   • DB negative
   Show answer & solution

   Correct answer: (C) O negative

   O negative red cells carry no A, B or Rh(D) antigens, so the recipient's antibodies do not attack them. That lets them be given to people of any blood group. AB positive is the universal recipient, because it has all three antigens. So the universal donor is O negative.

2. Q2easy

   Which instrument is used to measure atmospheric pressure?

   • AHygrometer
   • BBarometer
   • CAnemometer
   • DHydrometer
   Show answer & solution

   Correct answer: (B) Barometer

   A barometer (for example, a mercury barometer, invented by Torricelli) measures atmospheric pressure. A hygrometer measures humidity, an anemometer wind speed, and a hydrometer the density of liquids. So the answer is the barometer.

3. Q3easy

   The chemical name of baking soda is:

   • ASodium bicarbonate
   • BSodium carbonate
   • CCalcium carbonate
   • DSodium chloride
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   Correct answer: (A) Sodium bicarbonate

   Baking soda is sodium hydrogen carbonate (sodium bicarbonate), NaHCO₃. When heated it releases CO₂, which makes dough rise. Sodium carbonate (Na₂CO₃·10H₂O) is washing soda, and sodium chloride is common salt. So the answer is sodium bicarbonate.

4. Q4medium

   Which part of the human brain maintains body balance and coordinates voluntary movements?

   • ACerebrum
   • BMedulla oblongata
   • CHypothalamus
   • DCerebellum
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   Correct answer: (D) Cerebellum

   The cerebellum, at the back of the brain below the cerebrum, keeps posture and balance and makes voluntary movements smooth and precise, for example walking or riding a bicycle. The cerebrum handles thinking and memory, the medulla controls breathing and heartbeat, and the hypothalamus controls body temperature, hunger and thirst. So the answer is the cerebellum.

5. Q5medium

   Bronze is an alloy of:

   • ACopper and zinc
   • BIron and carbon
   • CCopper and tin
   • DTin and lead
   Show answer & solution

   Correct answer: (C) Copper and tin

   Bronze is mainly copper with tin, and it is used for statues, medals and bells. Copper and zinc make brass, iron and carbon make steel, and tin and lead make solder. So bronze is copper and tin.