The correct answer is option 4 i.e. 1% of 6.5 > (0.4)³ > √(0.0036)

By solving each of them,

⇒ (0.4)³ = 0.4 × 0.4 × 0.4 = 0.064

⇒ 1% of 6.5 = 6.5/100 = 0.065

⇒ √(0.0036) = 0.06

⇒  1% of 6.5 > (0.4)³ > √(0.0036)

The correct answer is option 2

The logic used here is:

Each English alphabet is formed by 3 line segments.

The alphabet E is formed by 4 line segments.

So, figure B is the odd one out.

Hence, the correct answer is option 2.

The correct answer is option 4 i.e. 178

The pattern is as follows:

Given series: 19, 43, 76, 120, 178, 249

19 + (4)² + 8 = 19 + 16 + 8 = 43

43 + (5)² + 8 = 43 + 25 + 8 = 76

76 + (6)² + 8 = 76 + 36 + 8 = 120

120 + (7)² + 8 = 120 + 49 + 8 = 177 ≠ 178

177 + (8)² + 8 = 177 + 64 + 8 = 249

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

If we arrange the given words in the order they will appear in the dictionary we will see,

3. Ear, 2. Earmark, 5. Earthy, 4. Ease, 1. Easily

Hence, the correct answer is Earmark.

The correct option is option 2 i.e. Feldspar.

• Feldspar is the most common mineral in the earth's continental crust.
• If you consider the entire crust, quartz is only the second most common mineral.
• Feldspars are a group of rock-forming tectosilicate minerals that makeup about 41% of the Earth's continental crust by weight.
• Feldspars crystallize from magma as both intrusive and extrusive igneous rocks and are also present in many types of metamorphic rock.

The correct answer is option 3 i.e. Radon.

Radon (Rn), a Group 18 element, is generated by the natural radioactive decay of uranium found in soils and rocks. As uranium undergoes radioactive decay, it produces radium, which further decays to release radon gas. Radon is a colourless, odourless, and tasteless noble gas that can accumulate in buildings, especially in basements and poorly ventilated areas. Due to its radioactive nature, prolonged exposure to high levels of radon can pose health risks, including an increased risk of lung cancer.

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

The force applied perpendicular to the surface of an object per unit area is called "pressure." Pressure is a fundamental concept in physics and engineering, defined as the ratio of force (F) exerted perpendicular to the surface to the area (A) over which the force is distributed. Mathematically, pressure (P) can be expressed as P = F/A. The SI unit of pressure is the pascal (Pa), which is equal to one newton per square meter (N/m²).

The correct answer is Option 1 i.e. 100 nm – 400 nm

• UV rays are used to purify the water
• The wavelength range is 100 nm – 400 nm

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

Acetabularia is a green algae belonging to the family Polyphysaceae. It is a unicellular organism, notable for its large size and complex structure, often growing up to several centimetres in length. Acetabularia has been widely studied in the field of developmental biology due to its unique ability to regenerate and its single nucleus, which plays a critical role in cellular processes. This alga is found in warm, shallow marine waters and is commonly known as the "mermaid's wineglass" due to its distinctive cap-like shape.

The correct answer is option 4 i.e. 60%.

Here,

A/B = (5/6) × (4/3) = 10/9    ....(i)

B/C = (4/3) × (6/5) = 8/5       ...(ii) and,

C/D = (5/4) × (3/4) = 15/16  ....(iii)

We have three equations from the given conditions

Now, 

Equation (i) × 8, (ii) × 9 and (iii) × 3

A/B = 80/72, B/C = 72/45 and C/D = 45/48

So, B - C = 72 - 45 = 27

Required % = (27/45) × 100 = 60%