Explore topic-wise InterviewSolutions in Current Affairs.

Correct option is (D) \(\frac{1}{V}=\frac{2}{s}(\frac{1}{a}+\frac{1}{b}+\frac{1}{c})\)

Volume of cuboid is V = abc   ________(1)

Surface area of cuboid is S = 2 (ab+bc+ca)    ________(2)

Dividing equation (2) by (1), we get

\(\frac{S}{V}=\frac{2(ab+bc+ca)}{abc}\)

\(\Rightarrow\) \(\frac{S}{V}=2(\frac1c+\frac1a+\frac1b)\)

\(\Rightarrow\) \(\frac{1}{V}=\frac{2}{s}(\frac{1}{a}+\frac{1}{b}+\frac{1}{c})\)

\(\therefore\) Correct option is (D)

D) \(\frac{1}{V} = \frac{2}{s}\) (\(\frac{1}{a}+\frac{1}{b}+\frac{1}{c}\))

Correct option is (B) \(\sqrt{l^2+b^2+h^2}\)

Diagonal of a cuboid \(=\sqrt{l^2+b^2+h^2}\)

 B) \(\sqrt{l^2+b^2+h^2}\)

Side of a Cube = 10 cm

Lateral Surface Area = 4 side²

Lateral Surface Area = 4(10 x 10) 

= 400 cm² 

Total Surface Area = 6 Side² 

= 6(10²) 

= 600 cm²

Correct option is  C) 256

Correct option is D. 96

Given,

Volume of cuboid =12 cm³

Let dimensions of cuboid = l × b × h

So, l × b × h = 12 …………………….(i)

Dimensions of one another cuboid = 2l × 2b × 2h

Volume of cuboid = 8lbh = 8 × 12 = 96 cm³

Correct option is  B) 270

Given, Dimensions of a cuboid: 

Length (l) = 80 cm 

Breadth (b) = 40 cm 

Height (h) = 20 cm 

We know that, 

Total Surface Area = 2[lb + bh + hl]

= 2[(80)(40)+(40)(20)+(20)(80)] 

= 2[3200+800+1600] 

= 2[5600] 

= 11200 

Therefore, Total Surface Area = 11200 cm² 

Now, Lateral Surface Area = 2[l + b]h

= 2[80+40]20

= 40[120] 

= 4800 

Thus, Lateral Surface Area is 4800 cm².

Correct option is (C) \(2(l+b)\,h:lb\)

L.S.A. of cuboid \(=2(l+b)\,h\)

Area of base of cuboid \(=lb\)

\(\therefore\) Required ratio \(=\frac{2(l+b)\,h}{lb}\)

\(=2(l+b)\,h:lb\)

Correct option is  C) \(2(l+b)\,h:lb\)

Given,

Total surface area of cuboid = 372 cm²

Lateral surface area = 180 cm²

= 2(l + b) h = 180

= lh + bh = \(\cfrac{180}2\) = 90………………(i)

And , = 2(lb + bh + hl) = 372

= lb + bh + hl = \(\cfrac{372}2\) = 186………………(ii)

Putting value of lh + bh from equation (i) to (ii)

= lb + 90 = 186

= lb = 186 - 90 = 96

=l × b = area of base = 96 cm²

Given details are,

Volume of a cuboid = 168 m³

Area of base = l × b = 28m²

Let height of cuboid be ‘h’ m

We know that,

Volume = l × b × h

h = volume/ l × b

= 168/28

= 6m

∴ Height of cuboid is 6 m.

Given details are,

Length of room = 12 m

Breadth of room = 9m

Height of room = 8m

So,

Length of longest rod that can be placed in room = diagonal of room (cuboid)

= √(l² + b² + h²)

= √(12² + 9² + 8²)

= √(144+81+64)

= √(289)

= 17m

Given details are,

Dimensions of a tank = 8m × 6m × 2m

We know that,

Volume of tank = l × b × h

= 8 × 6 × 2

= 96 m³

= 96000 litres

∴ The tank can contain 96000 litres of water.

Given,

Dimension of rectangular tank = 80m × 25m = 8000cm × 2500cm

Cross section area of pipe = 25 cm²

Rate of flow of water through pipe = 16 km/h

Length of pipe = flow of water through it in 45 minute at speed 16 km/h

\(=\cfrac{45}{60}\times16\times1000\times100\) cm

Volume of pipe = \(=\cfrac{45}{60}\times16\times1000\times100\) cm³

 = h = \(\cfrac{16000\times100\times45\times25}{60\times8000\times2500}\) = 1.5 cm

Correct Answer is:(a) 32% 

• Percentage of free space in BCC unit cell is A) 32%. The ratio of volumes in unit cell occupied by atoms to the total unit cell volume is referred to as the packing fraction or packing density.

• For cubic structure centred around the body, Packing fraction = 68% of the unit cell is occupied by atoms

Correct Answer is: B) 10%

The amount of energy at each trophic level decreases as it moves through an ecosystem. As little as 10 percent of the energy at any trophic level is transferred to the next level; the rest is lost largely through metabolic processes as heat.

Correct answer is (B) 10%

The news flashed on the radio that a cyclonic storm was expected to hit the village within next twenty four hours.

Gayatri rowed towards the helpless people and helped them board her boat. Then she rowed to the town hall and dropped them there. She also donated some clothes, food, matchboxes and candles for them.

The news flashed on the radio that a cyclonic storm was expected to hit the village within next twenty four hours.

Gayatri was excited because she was going for fishing in the sea with her father.

The poet notices nature through the different elements of nature. These include the crow, the tree and snow. He is able to experience the touch of nature through the dust of snow. A hemlock tree is a poisonous tree that forebodes death. It creates a mood of depression and despair.A crow can be associated with something dark, black, and foreboding. Also,the poet has written about a hemlock tree, which is a poisonous tree. Frost wanted to symbolise the feelings of sadness and regret, which is why he has used a hemlock tree. The crow and the hemlock tree represent sorrow. The dust of snow that is shaken off the hemlock tree by the crow stands for joy that Frost experiences. He has, therefore, used an unconventional tree and bird in order to contrast them with joy in the form of snow.

1. (i) The poet mentions the change of mood here. The poet's mood was pensive in the beginning but later his mood changed and saved the rest of his day.

2. (ii) The rhyme scheme of the passage is abab.

3. (ii) The rhyming words are heart-mood, part-rued.

4. (iii) The name of the poem is "Dust of Snow".

5. (ii) The poem is written by Robert Frost.

C. Apostrophe

A “dust of snow”means the fine particles of snow. This “dust of snow” changed the poet’s mood. The poet’s mood changed from that of dismay to joy. He was holding the day in regret when this dust of snow fell on him and this simple little thing brought him some joy.

1. (ii) A crow shook dust of snow on the poet. The crow sat on the branch of a hemlock tree.

2. (iii) The crow changed the poet6s mood by shaking down the dust of snow from a hemlock tree.

3. (iv) The crow sat on the branch of a hemlock tree.

4. (i) The poet6s day would have been worse.

5. (ii) The poem is wri8en by Robert Frost.

The poem, ‘Dust of Snow’ by Robert Frost, reiterates that the little things in life can bring about huge changes in the coming time. It also shows that if we can take the hard times of life in stride, eventually, something will happen to change our situation into happier times. The simple things we do for others can make all the difference. Just think about those random acts of kindness we do and how much they brighten a person’s day and sometimes change their future. Noticing and appreciating all the small things in life will make our life happier. It will also cause us to have a spirit that is willing to change and therefore succeed.

Correct option: (C) They can be autotrophic.

1. (i) The falling of dust of snow on the poet had changed his mood.

2. (ii) The poet had felt sad about that day. 4ut the fall of snow-dust changed his mind.

3. (ii) The rhyme scheme of the passage is abab.

4. (i) The poet stopped ruing the day and his mood changed.

5. (i) The crow symbolises the poet's sad and depressive mood.

Correct option: (A) Euglena is a multicellular organism

The narrator and his wife made special arrangement for Bruno and created all facilities for him. They prepared a special island for Bruno.

1. (iii) Some people think that the world will end in fire. Others say that it will end in ice.

2. (i) According to the poet, the world will end in fire.

3. (ii) Here, 'desire' means man's passions and violence.

4. (iv) The poem is 'Fire and ice' and the poet is Robert Frost.

5. (i) Wish

Correct option: (A) Generic name

Zoological name of an organism is made up of two words, first is generic name and second is specific name.

Yes ,I believe that this world will end some day but when nobody knows. Whether the sun gets hot or it gets colder, in both the situations, end of this world is sure.

Correct option: (D) Diatom

The rhyme scheme of the poem is: a, b, a, a ; b. c, b, c, b. 

The contrasting ideas of ‘fire’ and ‘ice’ are presented using this rhyme scheme. He mentions that both fire and ice are probable ends of this world. While he talks about how fire represents desire and can therefore be a cause of the end of the world, he also mentions ice in between to symbolize that the cold and indifferent attitude towards one another will also be enough to end the world. In the second stanza, he says that he knows of enough hate in the world that even destruction through ice would be sufficient to bring about the end of the world.

In the present poem ‘Fire’ is associated with greed, cruelty and lust, whereas ‘Ice’ is associated with rigidity, hatred, coldness and indifference.

The rhyme scheme of the poem is : a, b, a, a; b. c, b, c, b. The two contrasting ideas ‘Fire’ and ‘Ice’ are aptly supported by the rhyme scheme of the poem as different letters of the alphabet carry different ideas expressed in the poem.

The tiger expresses his rage quietly because there is nothing he can do from behind the bars of his cage. He is helpless as his strength now lies inside the cage. He is no longer free as he was in the jungle.

1. (iii) The last voice heard by the tiger is that of cars patrolling.

2. (ii) The tiger heard the voice because he is locked in a cage at a zoo.

3. (i) The tiger stares at the stars because he aspires to be free as he is not happy in the zoo.

4. (ii) At night, the eyes of a tiger look bright and shiny.

5. (iii) They look so because of the characteristic of cat family so which they belong.

The tiger in the wild is majestic. He is free and lies under the shades and hunts for prey. He moves near the water because food s is in plenty there. Sometimes he growls and terrorises the villagers.

1. (i) You should go to the jungles in the east by chance.

2. (iv) The east means the countries in the eastern part of the world.

3  (ii) The described animal looks large and yellow coloured.

4. (iii) You will know it is an Asiatic lion when it is roaring at you when you are dying with fear.

5. (iii) The poet’s real purpose to give such suggestion is to create humour.

1. (iv) The leopard has spots on his skin.

2. (i) When the leopard meets a person he leaps on him at once.

3. (iii) Bo, it will not help him. The leopard will eat him up.

4. (ii) ababcc

5. (iv) Strolling-walking casually, forth-forward

This repetition is a poetic device used by the poet in order to increase the intensity of the tiger’s rage and his helpless silence. ‘Velvet quiet’ refers to the quiet, velvet paws of the tiger, which cannot run or leap. They can only walk around the limited space in the cage. The use of ‘quiet rage’ symbolizes the anger and ferocity that is building up inside the tiger as it wants to run out into the forest and attack a deer.But the rage is quiet because it cannot come out in the open as it is in the cage. This double use of ‘quiet’ has brought immense beauty to the poem. Similarly, the use of ‘brilliant’ for the tiger’s eyes as well as the stars also brings out the magnificence of these lines. The tiger has dream of being free in its ‘brilliant’ eyes. It sees the stars (that have also been described as brilliant) with the same eyes. It stares at the brilliant stars with its brilliant eyes thinking about how beautiful its life could be in the forest. The repetitiveness of these words gives a wonderful effect to the poem.

The tiger in the cage is just a s diminished form of his original self. He paces up and down in the cage restlessly. He is confined in the narrow cell and keeps staring at the stars as if longing for freedom. He is helpless and draws pity for his condition.

1. (iii) The noble wild beast is Bengal Tiger.

2. (ii) The beast has black stripes on a yellow background.

3. (iv) Round-ground, you- you, learn-discern.

4. (v) Be should be careful about being eaten.

5. (ii) noble-high born, discern-recognize

1. (i) He is in a village showing his white teeth and claws.

2. (ii) He is terrorising villagers.

3. (iii) "He" should be in the forest.

4. (iv) He is snarling around houses at the jungle’s edge.

5. (v) He terrorises the villagers by showing his sharp teeth and claws, and by growling.

1. (iv) The two qualities of the animal are8 he has stripes and velvet pads.

2. (i) He moves only a few steps because he has been put in a cage in a 9oo where he has limited space to move.

3. (ii) He is the tiger.

4. (i) He is in a small cage.

5. (i) He is angry.

The tiger should snarl around houses at the edge of the forest because of the following reasons. Firstly the villagers will not disturb the peace of the forest. Secondly, they will not kill the animals for money or just for fun.

The tiger is locked in a concrete cell where he can hardly take a few steps along the length of the cage. He doesn’t take any notice of the visitors who come there. With his shining eyes, he keeps staring at the bright stars in the sky.

No, dyin’ does not rhyme with ‘lion’. It is for this reason that the poet has used dyin’ so that when we pronounce it, it rhymes with ‘lion’.