Practice Question and Answer

Q:

केन्द्रीय चावल रिसर्च संस्थान कहां पर स्थित है?

2326 0

  • 1
    चेन्नई
    Correct
    Wrong
  • 2
    कटक
    Correct
    Wrong
  • 3
    बैंगलोर
    Correct
    Wrong
  • 4
    पुणे
    Correct
    Wrong
  • 5
    लखनऊ
    Correct
    Wrong
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Answer : 2. "कटक"

Q: What is the oxidation number of carbon in NaHCO3? 2326 0

  • 1
    -4
    Correct
    Wrong
  • 2
    -3
    Correct
    Wrong
  • 3
    +4
    Correct
    Wrong
  • 4
    +2
    Correct
    Wrong
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Answer : 3. "+4"
Explanation :

Answer: C) +4 Explanation: The given compound is NaHCO3 Sodium bicarbonate which is commonly known as Baking soda. Oxidation numbers are the charges on ions. When a neutral atom loses electrons it becomes positively charged. When a neutral atom gains electrons it becomes negatively charged.   Here the C represents the oxidation state of carbon in this compound. Compounds are electrically neutral, which is why we set the sum of the oxidation states equal to zero. Sodium has a +1 oxidation state. Hydrogen has a +1 oxidation state. Oxygen has a -2 oxidation state. There are three oxygen atoms, which means the total oxidation state provided by both oxygen ions is -6. Adding up these oxidation states we get: 1 + 1 + (-6) + C = 0 -4 + C = 0 => C = 4 This means the oxidation state of carbon in this compound is +4.

Q: What has two hands but no arms or legs? 2326 0

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Answer :
Explanation :

A Clock has 3 hands i.e, an Hour hand, a Minute hand and a Seconds hand.

Q: Which one of the following is elected as the national microbe of India. 2326 0

  • 1
    Bacillus Thurigiensis
    Correct
    Wrong
  • 2
    Lactobacillus
    Correct
    Wrong
  • 3
    Yeast
    Correct
    Wrong
  • 4
    Acetobacter
    Correct
    Wrong
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Answer : 2. "Lactobacillus"

Q:

जब (1523 + 2323) को 19 से विभाजित किया जाता है तो शेष फल क्या होगा ?

2326 0

  • 1
    0
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    15
    Correct
    Wrong
  • 4
    18
    Correct
    Wrong
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Answer : 1. "0 "

Q:

एलेक्स ने 30% की लगातार दो छूट की घोषणा करने के बाद अपना सामान बेचा। कुल मिलाकर प्रभावी छूट है-

2325 0

  • 1
    52%
    Correct
    Wrong
  • 2
    49%
    Correct
    Wrong
  • 3
    50%
    Correct
    Wrong
  • 4
    51%
    Correct
    Wrong
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Answer : 4. "51%"
Explanation :

Q:

यदि ROSE को 6821, CHAIR को 73456 और PREACH को 961473 के रूप में कोडित किया जाता है, तो SEARCH का कोड क्या होगा?

2325 0

  • 1
    246173
    Correct
    Wrong
  • 2
    214673
    Correct
    Wrong
  • 3
    214763
    Correct
    Wrong
  • 4
    216473
    Correct
    Wrong
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Answer : 2. "214673"

Q: France-based Thomson has sold its Italian tubes manufacturing plant to an Indian company. Identify the company. 2325 0

  • 1
    BPL
    Correct
    Wrong
  • 2
    Mirc Electronics
    Correct
    Wrong
  • 3
    Videocon
    Correct
    Wrong
  • 4
    Godrej
    Correct
    Wrong
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Answer : 3. "Videocon"
Explanation :

Answer: C) Videocon Explanation:

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