Class 12th

Five men decide to go shopping to Karol Bagh, Delhi. They arrived at the designated meeting place in the following order: 1. Raman, 2. Aman, 3. Dev, 4. Sanjay, and 5. Kamal. Each men spent at least Rs. 1000 below are some additional facts about how much they spent during their shopping spree.

i. The man who spent Rs. 2234 arrived before the man who spent Rs. 1193.

ii. One man spent Rs. 1340 and he was not Dev.

iii. One man spent Rs. 1378 more than Aman.

iv. One man spent Rs. 2517 and he was not Raman.

v. Sanjay spent more than Dev.

vi. Kamal spent the largest amount and Aman the smallest.

What was the amount spent by Kamal?

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One of the men spent 2517 – 1378 = 1139, he is Aman. This is the only possibility as we add Rs. 1378 even to the least amount Rs. 1193, we will not be able to satisfy all the conditions given simultaneously.

So, the table obtained is:

Raman	Aman	Dev	Sanjay	Kamal
2234	1139	1139	1340	2517

(c)

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Class 12th Chemistry

In the following sequence of reactions,

$C_{3} H_{6} \overset{H^{+} / H_{2} O}{\to} A \to_{d i l K O H}^{K Ι O} B + C$

The compounds B and C respectively are:

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alok kumar singh

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Here, C₃H₆ is propene

Second reaction is iodoform reaction.

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i. The man who spent Rs. 2234 arrived before the man who spent Rs. 1193.

ii. One man spent Rs. 1340 and he was not Dev.

iii. One man spent Rs. 1378 more than Aman.

iv. One man spent Rs. 2517 and he was not Raman.

v. Sanjay spent more than Dev.

vi. Kamal spent the largest amount and Aman the smallest.

The men who spent Rs. 1193 is

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So, the table obtained is:

Raman	Aman	Dev	Sanjay	Kamal
2234	1139	1139	1340	2517

(c)

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5 months ago

i. The man who spent Rs. 2234 arrived before the man who spent Rs. 1193.

ii. One man spent Rs. 1340 and he was not Dev.

iii. One man spent Rs. 1378 more than Aman.

iv. One man spent Rs. 2517 and he was not Raman.

v. Sanjay spent more than Dev.

vi. Kamal spent the largest amount and Aman the smallest.

Which of the following amount was spent b

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So, the table obtained is:

Raman	Aman	Dev	Sanjay	Kamal
2234	1139	1139	1340	2517

(a)

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Class 12th Chemistry

Number of paramagnetic oxides among the following given oxides is_________.

Li₂O, CaO, Na₂O₂, KO₂, MgO and K₂O

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alok kumar singh

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Given are the oxide of alkali and alkaline earth metals which are ionic in nature.

Simple oxide are Li₂O, CaO, MgO and K₂O.

Peroxide is Na₂O₂ and superoxide is KO₂.

All simple oxides are diamagnetic as it has no unpaired electron.

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i. The man who spent Rs. 2234 arrived before the man who spent Rs. 1193.

ii. One man spent Rs. 1340 and he was not Dev.

iii. One man spent Rs. 1378 more than Aman.

iv. One man spent Rs. 2517 and he was not Raman.

v. Sanjay spent more than Dev.

vi. Kamal spent the largest amount and Aman the smallest.

What was the amount spent by Sanjay?

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So, the table obtained is:

Raman	Aman	Dev	Sanjay	Kamal
2234	1139	1139	1340	2517

(b)

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Direction for questions 9 to 12:

Coach Rahul sat with the score cards of Indian players from the 3 games in a one-day cricket tournament where the same set of players played for India and all the major batsmen got out. Rahul summarized the batting performance through three diagrams, one for each game. In each diagram the three outer triangles communicate the number of runs scored by the three top scorers from India, where K, R, S, V and Y represent Krunal, Rohit, Sanjay, Virat and Yogesh respectively. The Middle triangle in each diagram denotes the percentage of total score that was scored by the top three Indian scorers in that game.

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(b)

Y scored 127 in G1 and G3. V scored 130 in G1 itself.

K's mas score could be 28 + 51 + 48 = 127

R's mas score could be 49 + 55 + 22 = 126

S's mas score could be 75 + 50 + 22 = 147

Only R definitely scored less than Y.

Hence, option 2.

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Direction for questions 9 to 12:

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(c)

Form answer to the first question, the M-index of only R and S can be exactly calculated.

Hence, option (c)

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Direction for questions 9 to 12:

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(a)

If y2 < 40, then y's R-index = 87 y2 > 47; i.e. 47 < Y's R-index 87

If y2 > 40, then Y's R-index = 87 – 40 = 47

47 ≤ Y's R-index ≤ 87

Similarly,

23 ≤ K's R-index ≤ 51

33 ≤ S's R-index ≤ 55

53 ≤ S's R-index ≤ 75

82 ≤ V's R-index ≤ 130

Any one of Y, K or R could have the lowest R-index.

Hence, option (a).

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Direction for questions 9 to 12:

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