● As is the chemical symbol of Arsenic and its atomic no is 33. Arsenic is placed in the P-Block elements and in the Nitrogen family (group 15). Its electronic configuration is 3d¹⁰4s²4p³.

● Arsenic is a metalloid, and it is widely used in poisons such as rat poison & insecticides. Arsenic is also used as a doping agent in semiconductors. Arsenic compounds can be used to make special glass and preserve wood.

● The harmika is a small platform with a railing located at the very top of a Buddhist stupa. Sometimes umbrellas were mounted in the harmika as a symbol of honour and respect.

● A gopuram is a monumental entrance tower at the entrance of a Hindu temple in the Dravidian architecture of Tamil Nadu.

● Mandapam is a Hindu temple architecture; it is a pillared hall or pavilion for public rituals.

● A garbhagriha or sannidhanam is the sanctum sanctorum, the innermost sanctuary of Hindu and Jain temples where murti resides.

● Lucknow is the capital city of Uttar Pradesh. It is situated on the bank of the Gomati River. The important cities and towns situated on the banks of the Ganga are Haridwar, Kanpur, Prayagraj, Varanasi, Patna, Bhagalpur etc.

● The Gomati River is a tributary of the Ganges. According to Hindu beliefs, the river is the daughter of Rishi Vashist. It originates from Gomat Taal (formerly known as Fulhaar jheel) near Madho Tanda, Pilibhit, Uttar Pradesh.

Let the initial area be, a₁ = 100 square units

Then final area, a₂ = 81% of 100 = 81 square units

a₁ : a₂ = 100 : 81

d₁ : d₂ = √a₁ : √a₂ = 10 : 9

(d₁ = Initial diagonal; d₂ = Final diagonal)

Let d₁ = 10 units; d₂ = 9 units

Decrease in diagonal = (1/10) ×100% = 10%

Let the total work be 180x.

Then, combined efficiency of A and B =  = 5x

Combined efficiency of B and C =  = 3x

And combined efficiency of A and C =  = 4x

By adding all three,

2 (A + B + C) = 5x + 3x + 4x = 12x

A + B + C =  = 6x

Now, efficiency of A

= Combined efficiency of A, B and C – combined efficiency of B and C

= 6x – 3x = 3x

Time taken by A to complete the work alone =  = 60 days

Given:

APB = 100°

Now, AOB = 180° – APB = 180° – 100° = 80°

In ∆OAB,

OA = OB (radius)

Therefore,

OAB = OBA =  =  =  = 50°

The equation after interchanging letters with signs:

⇒ 74 + (31×2) × 2 - (68-4) ÷ (4×2)

⇒ 74 + 62 × 2 – 64 ÷ 8

⇒ 74 + 124 - 8

⇒ 198 – 8 = 190

Hence, option B is the correct answer.

Thus, Arpita is facing south.

Hence, option D is the correct answer.

As per the given information:

Thus, Dev’s wife is daughter of paternal grandfather of girl.

Hence, option C is the correct answer.

Let’s first see how and when these words are used:

Hurrah – used to express joy or approval.

Bother – used to express mild irritation or impatience.

Bravo – used to express approval when a performer or other person has done something well.

Goodness gracious – used to express surprise, dismay, or alarm

The speaker is surprised to see someone’s hair. Thus, the only word that will fit in the blank contextually is ‘goodness gracious’.

Hence, option D is the correct answer.

Imposter = a person who pretends to be somebody else in order to trick other people

Namesake = a person who has the same name as another

Ancestor = a person in your family who lived a long time before you

Hence, option C is the correct answer.

Option A: is incorrect as we do not use ‘have’ in continuous form like this. Also, little is used for size.

Option D: We do not use ‘much’ with ‘countable nouns’ like ‘all-rounders’.

Hence, option C is the correct answer.