Practice Question and Answer

Q: Indian Water falls "Kunchikal falls" is in which state ? 2767 0

  • 1
    Odisha
    Correct
    Wrong
  • 2
    Maharastra
    Correct
    Wrong
  • 3
    Rajasthan
    Correct
    Wrong
  • 4
    Karnataka
    Correct
    Wrong
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Answer : 4. "Karnataka"
Explanation :

Answer: D) Karnataka Explanation: Kunchikal falls of India is of height 1493 ft is in Karnataka state of the river Varahi.

Q: When Ionic bonds are formed metallic atoms tend to 2766 0

  • 1
    share electrons
    Correct
    Wrong
  • 2
    gain electrons
    Correct
    Wrong
  • 3
    lose electrons
    Correct
    Wrong
  • 4
    None of above
    Correct
    Wrong
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Answer : 3. "lose electrons"
Explanation :

Answer: C) lose electrons Explanation: Ionic bonding is the complete transfer of valence electron(s) between atoms. It is a type of chemical bond that generates two oppositely charged ions. In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.   Hence, when Ionic bonds are formed metallic atoms tend to lose electrons and become positive ions

Q:

What percentage of carbon is in steel?

2766 0

  • 1
    3%
    Correct
    Wrong
  • 2
    4%
    Correct
    Wrong
  • 3
    2%
    Correct
    Wrong
  • 4
    5%
    Correct
    Wrong
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Answer : 3. "2%"

Q:

What is the smallest unit of power?

2766 0

  • 1
    Horsepower
    Correct
    Wrong
  • 2
    Megawatt
    Correct
    Wrong
  • 3
    Watt
    Correct
    Wrong
  • 4
    Kilowatt
    Correct
    Wrong
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Answer : 3. "Watt"

Q:

Which bank has formed Kisan Clubs to reach farmers easily?

2766 0

  • 1
    Reserve Bank of India
    Correct
    Wrong
  • 2
    Bank of India
    Correct
    Wrong
  • 3
    Regional Rural Banks
    Correct
    Wrong
  • 4
    Allahabad Bank
    Correct
    Wrong
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Answer : 3. "Regional Rural Banks"

Q: The top and bottom of a tower were seen to be at angles of depression 30° and 60° from the top of a hill of height 100 m. Find the height of the tower ? 2766 1

  • 1
    42.2 mts
    Correct
    Wrong
  • 2
    33.45 mts
    Correct
    Wrong
  • 3
    66.6 mts
    Correct
    Wrong
  • 4
    58.78 mts
    Correct
    Wrong
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Answer : 3. "66.6 mts"
Explanation :

Answer: C) 66.6 mts Explanation: From above diagramAC represents the hill and DE represents the tower Given that AC = 100 m angleXAD = angleADB = 30° (∵ AX || BD ) angleXAE = angleAEC = 60° (∵ AX || CE) Let DE = h Then, BC = DE = h, AB = (100-h) (∵ AC=100 and BC = h), BD = CE tan 60°=AC/CE => √3 = 100/CE =>CE = 100/√3 ----- (1) tan 30° = AB/BD => 1/√3 = 100−h/BD => BD = 100−h(√3)∵ BD = CE and Substitute the value of CE from equation 1 100/√3 = 100−h(√3) => h = 66.66 mts The height of the tower = 66.66 mts.

Q:

Indian Army celebrated the Poonch Link-up Day on which date?

2765 0

  • 1
    November 25
    Correct
    Wrong
  • 2
    November 24
    Correct
    Wrong
  • 3
    November 23
    Correct
    Wrong
  • 4
    November 21
    Correct
    Wrong
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Answer : 3. "November 23"

Q: How many arrangements can be made out of the letters of the word COMMITTEE, taken all at a time, such that the four vowels do not come together? 2765 0

  • 1
    216
    Correct
    Wrong
  • 2
    45360
    Correct
    Wrong
  • 3
    1260
    Correct
    Wrong
  • 4
    43200
    Correct
    Wrong
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Answer : 4. "43200"
Explanation :

Answer: D) 43200 Explanation: There are total 9 letters in the word COMMITTEE in which there are 2M's, 2T's, 2E's. The number of ways in which 9 letters can be arranged = 9!2!×2!×2! = 45360   There are 4 vowels O,I,E,E in the given word. If the four vowels always come together, taking them as one letter we have to arrange 5 + 1 = 6 letters which include 2Ms and 2Ts and this be done in 6!2!×2! = 180 ways.   In which of 180 ways, the 4 vowels O,I,E,E remaining together can be arranged in 4!2! = 12 ways.   The number of ways in which the four vowels always come together = 180 x 12 = 2160.   Hence, the required number of ways in which the four vowels do not come together = 45360 - 2160 = 43200

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