Explanation

Explanation

Blade → The flat, leaf-like part

Stipe → The stem-like structure

Holdfast → Anchors the organism to a surface (like a root)

These are characteristic parts of macroscopic algae (especially brown algae like Laminaria or Sargassum).

Explanation

A solid changes directly into a gas without becoming liquid

Example: Camphor, dry ice (solid CO₂), and iodine undergo sublimation.

Explanation

: CsCl has a body-centered cubic (bcc) structure, where each Cs⁺ ion is surrounded by 8 Cl⁻ ions and vice versa.

Explanation

Explanation

 "Contemptuous" means showing deep hatred or disapproval, often with a sense of superiority.

A "contemptuous noise" would suggest a sound expressing scorn or disdain, not cheerfulness or humor.

Explanation

Step 1: Use projectile motion

The maximum range of a projectile (ignoring air resistance) is given by:

R=v^2sin(2θ)/g​

The maximum range occurs when θ=45∘the value is maximum at (i.e.,sin(90∘)=1).

Step 2: Plug in values

• $v = 12 text{m/s}$

• g=10 m/s^2

R=12^2⋅1 ​/ 10 

= 144/10

​=14.4 meters

Explanation

Although the Balmer series mainly falls in the visible region, its limiting line (as $n\to \infty$) shifts into the UV region.

Explanation

Micronutrients are essential elements required by organisms in small quantities for proper growth and development.

Among the options:

• Manganese, Iodine, Zinc, and Iron are all recognized micronutrients for humans and plants.

• Sodium, Magnesium, and Sulfur are considered macronutrients because they are required in larger amounts.

Explanation

 In $text{K}_2text{Cr}_2text{O}_7$, total oxidation state must be 0. K = +1, O = –2, so Cr must be +6 to balance the equation:

$$2(+1)+2(x)+7(–2)=0\Rightarrow x=+6$$