The correct answer is Option 2 i.e. 4.

For any number ending with 4,

N^even ends with 6, and N^odd ends with 4

⇒ 2014²⁰¹⁴ ends with 6

For any number ending with 9,

N^even ends with 1, and N^odd ends with 9

⇒ 2019²⁰¹⁹ ends with 9

Unit digit of (2014)²⁰¹⁴ × (2019)²⁰¹⁹ = 6 × 9 = 54

Unit digit = 4

The correct answer is Option 2 i.e. 12.44.

1.05% of 110 + 5.85% of 460 - 6.25% of 250 = ?

⇒ 1.05(110)/100 + 5.85(460)/100 - 6.25(250)/100 

⇒ 115.5/100 + 2691/100 - 1562.5/100

⇒ (115.5 + 2691 - 1562.5)/100

⇒ 1244/100

⇒ 12.44

The correct answer is option 1 i.e. 20 m

Hence, the correct answer is 20 m East.

The correct answer is option 1 i.e. Hodophile

Naturalist is the one who loves Nature.

Similarly,

Hodophile is the one who loves to travel.

Note:

Polyglot is the one who knows and uses various languages.

Photophile is the one who loves light.

Aesthete is the one who is appreciative of and sensitive to art and beauty.

Hence, the correct answer is Hodophile.

The correct answer is option 4 i.e. Fourth.

India's fourth Nuclear powered ballistic missile submarine (SSBN) codenamed S4 was recently launched at Ship Building Center (SBC) in Visakhapatnam. The submarine has 75% indigenous content and is equipped with K4 ballistic missiles with a range of 3500 km. The SSBN is currently operated only by the United States, Russia, China, UK, France and India. The three previously launched SSBN are namely INS Arihant, INS Arighaat and INS Aridhaman.

The correct answer is option 2 i.e. Gallium.

• Gallium, designated by the symbol Ga and atomic number 31, has been utilized since its discovery in 1875 to create alloys with low melting points.

• It is heavily employed in the semiconductor industry, often as a dopant in semiconductor substrates.

The correct answer is option 1 i.e. Methanoic Acid.

The correct answer is Option 1 i.e. Diffraction.

Diffraction occurs when light waves bend around obstacles or pass through small openings, causing them to spread out rather than forming a sharp shadow edge. This spreading effect is more pronounced when the obstruction or aperture is comparable to or smaller than the wavelength of light. Diffraction is responsible for softening the edges of shadows and is a fundamental aspect of wave behaviour in optics, influencing various phenomena from photography to astronomy.

The correct answer is option 1 i.e. Alveoli.

• Alveoli are tiny air sacs in the lungs where gas exchange occurs.
• Oxygen from the air diffuses into the blood, and carbon dioxide diffuses from the blood into the alveoli to be exhaled.
• Bronchi (B), trachea (C), and pharynx (D) are part of the airway but do not participate directly in gas exchange.

The correct answer is option 4 i.e. 4.5 cm.

AD = 3 cm, AE = 4 cm, EC = 6 cm

Here,

AD/AB = AE/AC

So,

3/(3 + x) = 4/(4 + 6)

⇒ 30 = 12 + 4x

⇒ 4x = 18

⇒ x = 4.5

Hence, DB = 4.5 cm