Explore topic-wise InterviewSolutions in Current Affairs.

 66.7 is atomic weight of metal .

रोग अर्थात अस्वस्थ होना। यह चिकित्साविज्ञान का मूलभूत संकल्पना है। प्रायः शरीर के पूर्णरूपेण कार्य करने में में किसी प्रकार की कमी होना 'रोग' कहलाता है। जिस व्यक्ति को रोग होता है उसे 'रोगी' कहते हैं।

The hybridization in [Fe(CO)₅] is sp³d

An equimolar mixture of d and I isomers is called recemic mixture.

Correct answer is (2) Zinc

Impure zinc is refined by distillation method.

Answer is (2) wrought iron and steel

Cast iron is used for manufacturing of wrought iron and steel

A’ on heating with HI in the presence of red phosphorous as catalys ‘B’ is formed.  CH₃CH₃ 

Rajasthan state was the first to enforce Panchyati Raj.

3 stages are of Panchyati Raj.

Correct option is (a) Alcohol

Primary aliphatic amines react with nitrous acid to form aliphatic diazonium salts which being unstable, liberate nitrogen gas quantitatively and alcohols.

Roger Skunk was humiliated by all other animals because he smelled really bad. None of the little creatures would play with him and he was boycotted by his peers. Roger Skunk used to cry as he felt lonely and embarrassed. Jack had faced similar kind of situations in his childhood. He also defended Roger’s Skunk’s mother as if he was defending his own mother.

Jo felt bad for the skunk for not having any friends and wanted him to smell like roses as only then other animals would play with him. She did not want the skunk to be humiliated and rejected for his foul smell. But Jack wanted to tell Jo “something true, something she must know”. He was adding autobiographical details to the story and wished to teach Jo to accept herself as she is. He had been taught by his mother to be comfortable in his own skin and that is exactly what he wished to pass on to his daughter. He refused to change the end of the story as he insisted that the skunk’s mommy loved him more than all the other animals and accepted him for what he was.

Roger Skunk was eager to change his foul smell into a pleasant one. So, he went to the wizard and asked him to make him smell like roses. This change made his acceptable to his friends but his mommy felt that he smelt awful. According to her, a skunk should smell like a skunk and not like roses. Also, she loved him for what he was and did not want him to change even a bit.

All. the characters in the story suffer from loneliness and are dreary souls. First, the tramp appears to lead a sad, monotonous existence, left to his own musings. He is always greeted by sour faces and cold words. The old crofter’s fate has been somewhat kinder to him. Bereft of his wife and children, he lives all alone in a cottage by the roadside and is rather happy to have visitors around. We also have the ironmaster and his daughter, Edla, who have no company for Christmas. The ironmaster’s wife is dead, and his sons are settled abroad. He, with his daughter, are happy to play hosts for his friend. Thus, all of them have a strong desire for bonding and comradeship. The crofter is happy to be friends with the peddler, although only for a night. It is the bonding with the ironmaster’s daughter that transforms the peddler. The love, understanding and dignity that he gets from the girl makes him leave his dishonest ways and redeem himself.

Satyajit Ray is famous for his stories having supernatural overtones.The idea of creating horror through a common object, as innocent as a doll, is the creepiest idea in the world and Satyajit Ray is the master of the art. In the story, a man Jayanto, revisits to a place in a small town of Bundi.

(b) mRT₁ log_e \(\cfrac{p_2}{p_1}\) N.m

Initial volume per kg of steam = \(\cfrac{2.25}3\) = 0.75 m³/kg

Specific volume of steam at 1.4 bar = 1.2363 m³/kg

Dryness fraction of initial steam = \(\cfrac{0.75}{1.2363}\) = 0.607

At 1.4 bar, the enthalpy of 3 kg of steam

= 3[h_f + xh_fg] = 3 [ 458.4 + 0.607 × 2231.9] = 5439.5 kJ

At 400°C, volume of steam per kg = \(\cfrac{4.65}3\) = 1.55 m³/kg

At 400°C, when v_sup = 1.55 m³/kg, from steam tables, 

Pressure of steam = 2.0 bar 

Saturation temperature 

= 120.2°C, h = 3276.6 kJ/kg

Degree of superheat 

= t_sup – t_s = 400 – 120.2 = 279.8°C

Enthalpy of superheated steam at 2.0 bar, 

400°C = 3 × 3276.6 = 9829.8 kg 

Heat added during the process 

= 9829.8 – 5439.5 = 4390.3 kJ.

Internal energy of 0.607 dry steam at 1.4 bar 

= 3 × 1708 = 5124 kJ. 

Internal energy of superheated steam at 2 bar, 400°C 

= 3(h_sup – pv) = 3(3276.6 – 2 × 10² × 1.55) = 8899.8 kJ (\(\because\) 1 bar = 10² kPa) 

Change in internal energy = 8899.8 – 5124 = 3775.8 kJ 

Hence, work done = 4390.3 – 3775.8 = 614.5 kJ.(\(\because\) W = Q – ∆U)

(B) 1.1 × 10^–4 s ^–1

Rate = k[A]

∴ k = \(\frac{Rate}{[A]}=\frac{6.6\times10^{-5}}{0.6}\)

= 1.1 × 10^–4 s ^–1

Correct option: b) Layout Artist

Correct option: c) Mute Key

Correct answer is b. Articles 

Correct answer is a. Processing unit 

a. Copper is oxidized.

b. Copper is the reducing agent. Sulphuric acid is the oxidizing agent.

Correct option is (c) White, BaSO₄

i. H₂(g) + I₂(g) ⇌ 2Hg(g)

In this reaction, the number of moles of the reactants and the number of moles of the products are same.

a. Zero

b. The oxidation state of carbon in carbon dioxide is +4.

c. Carbon is oxidized.

d. Sulphuric acid is the oxidizing agent.

The auditory system is the sensory system for the sense of hearing.
The gustatory system is the sensory system for the sense of taste.
Olfactory receptors expressed in the cell membranes of olfactory receptor neurons are responsible for the detection of odor molecules.

A substance which gives oxygen for oxidation is called an oxidising agent. Alkaline potassium permanganate and acidified potassium dichromate are strong oxidising agen[s.

No, we would not be able to check whether a sample of water is hard by using a detergent because a detergent forms lather easily even in hard water.

The value of velocity constant (K) of reaction depends on Temperature.

Decrease in temperature by increases the rate of physical adsorption.

Number of basic types of crystals are 7.

NaCl crystal structure is  Face centred.

In body centred cubic crystal structure co-ordinate number of atom is 8.

p(x) = 0

p(2) = 0

3x² - px + 2 = 0

3 (2)² - p x 2 + 2 = 0

3 x 4 - 2p + 2 = 0

12 - 2p + 2 = 0

14 - 2p = 0

-2p = -14

p = -14/-2

p = 7

p(x) = 0

p(2) = 0

4x² -qx - 10 = 0

4 (2)² - q x 2 - 10 = 0

4 x 4 - 2q - 10 = 0

16 - 2q - 10 = 0

6 - 2q = 0

-2q = -6

q = -6/-2

q = 3

Infinite rational numbers lie between 2 and 3.

Suppose, the units place digit of the two digit number is y and the tens place digit is x

∴ the number is 10x + y

∴ the number obtained by reversing the digits is 10y + x

∴ from the given conditions,

(10x +y) + (10y + x) = 121 

∴ 11x + 11y = 121 ∴ x + y = 11 .......... (I)

Also, x = y + 7 ∴ x - y = 7 ..........(II)

∴ Adding (I) and (II), 2x = 18 x = 9  

∴ from (I) a + y = 11 y = 2 

∴ the two digit number is 29.

a. If r is the radius of the sphere, then its volume = \(\frac{4}{3}\) πr³

If h is the height of the cone, then its volume = \(\frac{1}{3}\pi r^2h\) = \(\frac{4}{3}\pi r^3\)

h = 4r

Height of pyramid is four times the radius of sphere.

Surface area of the sphere = 4πr²

Slant height of the cone = \(\sqrt{(4r)^2+r^2}\) = \(\sqrt{17r^2}\) = \(\sqrt{17r}\)

Surface area of the cone = \(\pi r^2+\pi r\sqrt{17r}\) = \(\pi r^2(1+\sqrt{17})\)

b. Surface area of the cone is greater

3 πr² = 675π cm²

r² = 225

The CSA of the solid hemisphere,

CSA = 2πr² = 2π × 225 = 450π cm²