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8 questions · timed · auto-graded

MCQ 11 Mark
A clock always has _________________
  • A
    Battery
  • B
    Numbers
  • C
    Needles
  • Frame
Answer
Correct option: D.
Frame
(D) Frame
Explanation : Out of the given four options, all the four options can be filled in the blank space. But option (d) is most appropriate in all, rest of the options are remove.
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MCQ 21 Mark
Danger leads to _________________
  • A
    Enemy
  • B
    Attack
  • Fear
  • D
    Help
Answer
Correct option: C.
Fear
(C) Fear
Explanation : On the basis of the four options given above it looks as if all the four can be filled in the place of blank space. But we have to select one that is most appropriate and indispensable. We have experienced in our life that danger always leads fear. All the other options are remote but fear is most proximate option.
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MCQ 31 Mark
Statements :
(i) Some car are trains.
(ii) Some trains are cats.
Conclusions:
I. No. car is cat.
II. Some cats are trains.
III. Some cars are cats.
IV. All trains are cars.
  • A
    Only either I or II or III follows
  • Only either I or III and II follows
  • C
    Only either I or III follows
  • D
    Only I, II and III follows.
Answer
Correct option: B.
Only either I or III and II follows
(B) Only either I or III and II follows
Explanation : Conclusions (II) and (IV) are immediate inferences drawn from statements (ii) and (i), respectively. Conclusion (II) follows as it is the converted form of statement (ii) (I-type proposition can be converted into I-type). Conclusion (IV) does not follow as it does not give the right conversion of the statement (i).
So from immediate inference only (II) follows. Conclusion (I) and (II) are mediate inferences.
Both are individually false because as per rule i.e., no mediate inference can be drawn from two particular premises. In the other words, we can say either conclusion I or III is right.
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MCQ 41 Mark
Showing a lady in the park, Vineet said, "She is the daughter of my grand father's only son." How is Vineet related to that lady?
  • Brother
  • B
    Cousin
  • C
    Father
  • D
    Uncle
Answer
Correct option: A.
Brother
(A) Brother
Explanation : The only son of Vineet's grand father is the father of Vineet and Daughter of Vineet's father is the sister of Vineet. Hence, Vineet is the brother of the lady.
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MCQ 51 Mark
Introducing Asha to guests, Gopal said, "Her father is the only son of my father." How is Asha related to Gopal ?
  • Daughter
  • B
    Mother
  • C
    Sister
  • D
    Niece
Answer
Correct option: A.
Daughter
(A) Daughter
Explanation : The only son of Gopal's father is the Gopal himself. This means that Gopal is the father of Asha. Hence, Asha is the daughter of Gopal.
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MCQ 61 Mark
Find the odd man out?
  • A
    $32: 15$
  • B
    $86: 42$
  • $56: 26$
  • D
    $74: 36$
Answer
Correct option: C.
$56: 26$
(C) $56: 26$
Explanation : Here, we can observe that in options (a), (b) and (d), second number is one less than the half of first number. So, option (c) is odd one out.
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MCQ 71 Mark
If LINGER is 123456 and FORCE is 56789 , then FIERCE is
  • A
    345667
  • 456678
  • C
    345677
  • D
    556789
Answer
Correct option: B.
456678
(B) 456678
Explanation :
$
\begin{array}{rl}
L \rightarrow 1 & F \rightarrow 5 \\
I \rightarrow 2 & O \rightarrow 6
\end{array}
$
$\begin{array}{ll} N \rightarrow 3 & R \rightarrow 7 \\ G \rightarrow 4 & C \rightarrow 8 \\ E \rightarrow 5 & E \rightarrow 9 \\ R \rightarrow 6 & \end{array}$
Letters R, E are common to LINGER and FORCE, and numbers 6 and 5 are common to their respective coding. Therefore, 5 and 6 will stand for R an E but not respectively. Now, since word FIERCE has double E, hence either of 5 and 6 will appear twice in its coding.
Besides, coding of FIERCE will have two numbers from coding of FORCE for letters F and C, and one from coding of LINGER for letter I. Hence, coding of FIERCE will be 456678 .
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MCQ 81 Mark
If TEMPLE is coded as VHQURL, how would you code CHURCH ?
  • EKYWIO
  • B
    EKUWIO
  • C
    EKVWIN
  • D
    EKYWJO
Answer
Correct option: A.
EKYWIO
(A) EKYWIO
Explanation :
Image
From above diagram it is clear that code for T is V , for E is H , for M is Q . It may be noticed from here that letters of TEMPLE have been replaced by new letters from the alphabets. There is a gap of one letter between $T$ and $V$, gap of two letters between $E$ and $H$, gap of three letters between $M$ and $Q$ and so on in the alphabets. Therefore, coding for CHURCH is
$\begin{array}{rrrrrr} C & H & U & R & C & H \\ +1 & +2 & +3 & +4 & +5 & +6 \\ E & K & Y & W & I & O \end{array}$
i.e., CHURCH is coded as EKYWIO.
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MCQ - Applied Maths STD 11 Science Questions - Vidyadip