The correct answer is Option 2 i.e. 25.2 m/sec

Length of the tunnel = 2.9 km = 2900 m

Time taken to cross the tunnel = 2 minutes = 120 sec

Distance = Speed × Time

The length of the train = 124 m

Let the speed of the train be x m/sec

Total distance = 2900 m + 124 m = 3024 m

⇒ 3024 = 120x

x = 3024/120 = 25.2 m/sec

The correct answer is option 4 i.e. G56V.

Logic: Add positional values of letters and reverse them.

The following pattern is followed here.

1. X92E = X (24) + E (5) = 29 = 92 

2. S23M = S (19) + M (13) = 32 = 23 

3. P33Q = P (16) + Q (17) = 33 = 33

4. G56V = G (7) + V (22) = 29 = 92 NOT 56

G56V is an odd one from these.

Hence, the correct answer is G56V.

The correct answer is option 4

The correct answer is option 2 i.e. 34.

Given equation: 10 - 50 + 5 ÷ 4 × 16

'+' means '÷', '÷' means '×', '×' means '-' and '-' means '+'

The equation becomes: 10 + (50 ÷ 5) × 4 - 16

= 10 + (10 × 4) - 16

= (10 + 40) - 16

= 50 - 16

= 34

Hence, the correct answer is 34.

The correct answer is option 2 i.e. Rohtang Pass.

• Rohtang Pass passes links Manali and Lahaul.
• This is a high mountain pass on the eastern Pir Panjal Range of the Himalayas that connects the Lahaul and Spiti Valleys with the Kullu Valley of Himachal Pradesh.
• The pass lies on the watershed between the Chenab and Beas basins. 

More Info About Passes:-

The correct answer is option 1 i.e. Atomic mass.

In Mendeleev's periodic table, the properties of elements are considered a periodic function of their atomic masses. Mendeleev arranged the elements in order of increasing atomic mass, observing that elements with similar chemical and physical properties appeared at regular intervals. This periodic recurrence of properties led him to formulate the periodic law, stating that the properties of elements are a periodic function of their atomic masses. However, the modern periodic table is based on atomic numbers rather than atomic masses.

The correct answer is option 1 i.e. I = mr².

The correct formula for the moment of inertia is I = mr², where I represent the moment of inertia, m is the mass of the object, and r is the distance from the axis of rotation. This formula applies specifically to a point mass rotating about an axis. For other shapes and configurations, the moment of inertia formula will vary depending on the mass distribution and axis of rotation.

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

The phenomenon where light waves cancel each other out, resulting in regions of darkness, is known as interference. Interference occurs when two or more coherent waves overlap in space and time, leading to constructive or destructive interference patterns. Constructive interference enhances the amplitude of light waves, resulting in bright regions, while destructive interference causes the waves to cancel each other out, resulting in dark regions. This phenomenon is crucial in various applications, such as in interference patterns observed in thin film coatings, interferometers, and the study of wave behavior in optics and quantum mechanics.

The correct answer is Option 2 i.e. Endocrine glands.

Endocrine glands release hormones directly into the blood, which then carries these chemical messengers to target organs and tissues throughout the body. Unlike exocrine glands, which use ducts to transport their secretions to specific sites (like sweat or salivary glands), endocrine glands are ductless and include structures like the thyroid, adrenal glands, and pituitary gland.

The Correct answer is Option 1 i.e. 97/78.

Tan A = 12/5

In right-angled triangle, Tan A = Perpendicular/Base

So, Perpendicular = 12 and Base = 5

Now,

Hypotenuse² = Perpendicular² + Base²

⇒ H² = 144 + 25

⇒ H = √169 = 13

Hence,

Sin A = P/H = 12/13

Cos A = B/H = 5/13

Cot A = 1/tan A = 5/12

Now,

Sin A + 2Cos A × Cot A = 12/13 + 2 × 5/13 × 5/12

⇒ Sin A + 2Cos A × Cot A = (144 + 50)/156

= 194/156

= 97/78