Explanation

It is a highly unstable isotope of hydrogen.

Hydrogen has no neutron.

It contain only one proton and one electron.

But the deuterium contain one neutron and tritium contain two neurons,

these are the isotopes of hydrogen.

Explanation

All important questions and Information Related to 'Photosynthesis"

Photosynthesis takes place in presence of the following light Only in sunlight from the sun

Photosynthesis takes place faster in white light

Photosynthesis occurs more in blue and red light rays

Photosynthesis occurs more in blue and red light rays and less, or not at all, in green light rays.

Green Light light is more important for photosynthesis.

As compared to photosynthesis, glucose is chiefly decomposed during Respiration

At the time of a Solar Eclipse, the rate of photosynthesis will: Decrease

In all plants, the major sites of photosynthesis are Leaves

In Photosynthesis reduction occurs in the Water

At night, when photosynthesis is stopped, plants Give off Carbon Dioxide.

Photosynthesis pigments are organized into clusters called thylakoid

The process of photosynthesis produces glucose and carbon dioxide

ND2-03-2023

Explanation

All important questions and Information Related to 'Photosynthesis"

Photosynthesis takes place in presence of the following light Only in sunlight from the sun

Photosynthesis takes place faster in white light

Photosynthesis occurs more in blue and red light rays

Photosynthesis occurs more in blue and red light rays and less, or not at all, in green light rays.

Green Light light is more important for photosynthesis.

As compared to photosynthesis, glucose is chiefly decomposed during Respiration

At the time of a Solar Eclipse, the rate of photosynthesis will: Decrease

In all plants, the major sites of photosynthesis are Leaves

In Photosynthesis reduction occurs in the Water

At night, when photosynthesis is stopped, plants Give off Carbon Dioxide.

Photosynthesis pigments are organized into clusters called thylakoid

The process of photosynthesis produces glucose and carbon dioxide

ND2-03-2023

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ND11-12-2022

Explanation

Steel is most elastic among the rubber, steel, glass and sponge.

Steel having the most steep linear stress-strain curve among all.

A stiffer material will have a higher elastic modulus.

RK11-12-22

Explanation

Very high frequency is ITU designation for the range of radio frequency electromagnetic waves from 30 to 300 megahertz, with corresponding wavelengths of ten to one meters.

Explanation

A scalar quantity has only magnitude and no direction.

Examples include mass, time, temperature, and speed.

Explanation

Without sunlight, there would be no scattering of light by the Earth's atmosphere.

This means that no scattered light would reach our eyes, and the sky would appear black.

Explanation

The SI unit of magnetic flux is Weber (Wb)

The Weber is commonly expressed in Volt-seconds

And a flux density of one Wb/m2 (one Weber per square meter) is one Tesla (T)

Explanation

Explanation

White goods are considered durable consumption goods.

This means they are goods that are designed to last for a significant period

They are used by consumers for their personal needs

White goods like refrigerators, washing machines, and dishwashers

They are built to withstand frequent use and last for several years. 

Explanation

When cream is separated from the milk,  the density of the milk increases.

Explanation

Chlamydomonas moves using two flagella, which help in swimming.

Flagella are whip-like structures that enable movement in water.

Explanation

Explanation

Human blood is red because hemoglobin.

It is carried in the blood and functions to transport oxygen.

It is iron-rich and red in color.

Octopuses and horseshoe crabs have blue blood.

This is because the protein transporting oxygen in their blood, hemocyanin, is actually blue.

Explanation

Explanation

Explanation

White Blood Cells (WBCs), also known as leukocytes, are a vital part of the immune system.

They protect the body from infectious diseases and foreign invaders by identifying and eliminating pathogens.

Such as bacteria, viruses, and other foreign substances.

Explanation

White blood cells (leukocytes) are part of the immune system.

They play a key role in defending the body against infections, diseases, and foreign invaders.

They help maintain overall health.

Explanation

Carrying capacity refers to the maximum number of individuals of a species that an environment can support over the long term without degrading the environment.

Explanation

Deficiency of Iodine causes Goitre disease.

Thyroxine is a hormone that causes Goitre in the human body.

Explanation

Ultra Violet rays: most harmful and are almost completely absorbed by our atmosphere.

Explanation

1. Mercury

Swift Planet for Mercury

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2. Venus

Eight planets in the solar system

Explanation

The heat of sun reaches the earth by Radiation.

Radiation is the transfer of heat energy through space by electromagnetic radiation.

Sunlight an average of 8 minutes and 20 seconds to travel from the Sun to the Earth.

Explanation

Gun powder is a mixture of sulphur, charcoal and potassium nitrate (KNO3).

Explanation

• Thermometer is used to measure  the temperature
• *****
• Temperature measurement (also known as thermometry) describes the process of measuring a current local temperature for immediate or later evaluation. 
• In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube.
• Mercury is used in thermometers because It has a high coefficient of expansion so that even a small rise in temperature 
• Galileo Galilei is claimed to be the inventor of the thermometer in 1714.
• Water freezes at 32 F and boils at 212 F
• SH6-9-2023

Explanation

An epidemic is derived from Greek epi meaning upon or above and demos meaning people.

An epidemic occurs when a large number of people in a specific area and time experience a sudden outbreak of a disease, exceeding normal expectations.

Explanation

The ribosome is a complex molecule made of ribosomal RNA molecules and proteins that form a factory for protein synthesis in cells.

Explanation

Explanation

Car mirrors are fitted on the sides 

enabling the driver to see traffic behind him/her to facilitate safe driving.

Explanation

There are 22 named SI-derived units.

Some, like Newton and the joule, are named for prominent scientists.

But many others — like area and volume — are simply labeled with the algebraic relationship of their base units!

Explanation

The energy transferred is known as kinetic energy, and it depends on the mass and speed achieved.

Kinetic energy can be transferred between objects and transformed into other kinds of energy.

Explanation

• The speed of sound is slower in denser media.
• Solids are denser than gases. However, they are also very rigid, and hence sound travels faster in solids.
• Stress on the fact that the speed of sound always depends on a combination of these two properties of any medium.

Explanation

IRON:

Symbol: Fe

Atomic mass: 55.845 u

Atomic number: 26

Electron configuration: [Ar] 3d64s2

Density: 7.874 g/cm³ (near room temperature)

Electrons per shell: 2, 8, 14, 2

Melting point: 1,538 °C

Explanation

The penetration power of the X-rays depends  on the wavelength and frequency of X-rays

The penetration power of the X-rays will be more when the energy of the X-ray is more.

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Related Question:

Explanation

Planning for an institution should be based on:

• Aims: The organization's purpose, goals, and objectives, providing direction and focus.
• Needs: The requirements and necessities of the students, teachers, and the institution itself, ensuring relevance and effectiveness.

Explanation

Commanding involves directing and ensuring the execution of plans.

It focuses on guiding and supervising tasks to achieve objectives.

Explanation

Organizing teaching work ensures structured delivery of content, lesson planning, and effective classroom management.

It lays the foundation for achieving educational goals and student success.

Explanation

Explanation

To find the number of students per row, divide total students by number of rows: 96 ÷ 6 = 16.

Each row has an equal number of students, so 16 students are in each row.

Explanation

n(A) = 75% of 600 = 450

n(B) = 45% of 600 = 270 and n(A ∪ B) = 600

∵ n(A∩B) = n (A) + n(B) - n(A∪B) = (450 + 270 - 600) = 120

Explanation

The mean proportional between two numbers a and b is a number x such that: a : x :: x : b

In this case, we want to find the mean proportional between 64 and 81.

Let's set up the proportion: 64 : x :: x : 81

We can rewrite this as: 64/x = x/81

Cross-multiplying, we get: 64 × 81 = x^2

Simplifying, we get: 5184 = x^2

Taking the square root of both sides, we get:

x = √5184

x = 72

So, the mean proportional between 64 and 81 is 72.

Explanation

Arithmetic mean= (18+3)/2=10.5

formula: sum of n A.M= n*A.M

4A.M=4*10.5

         =42

Explanation

Given: a/b = 3/5 ... (1)

When 2 is added to both numbers, the ratio becomes 2/3, so we can write:

(a+2)/(b+2) = 2/3 ... (2)

Cross-multiplying (2), we get:

3(a+2) = 2(b+2)

Expanding and simplifying, we get:

3a + 6 = 2b + 4

Subtracting 6 from both sides gives:

3a = 2b - 2

Now, substituting (1) in the above equation, we get:

3(3/5)b = 2b - 2

Multiplying both sides by 5, we get:

9b = 10b - 10

Subtracting 10b from both sides gives:

-b = -10

Dividing both sides by -1, we get:

b = 10

So, the correct answer is: 10

Explanation

The ratio of copper to silver is 3:7.

To find the percentage of silver in the alloy, we can use the following formula:

Percentage of silver = (Amount of silver / Total amount) × 100

First, let's find the total amount:

Total amount = Copper + Silver

= 3 + 7

= 10

Now, we can plug in the values:

Percentage of silver = (7 / 10) × 100 = 70%

So, the percentage quantity of silver in the alloy is 70%.

The correct answer is: 70%

Explanation

Given data:

The seller sells 40% of his apples.
After selling, he still has 420 apples.
Concept/Formula:

The concept used to solve this problem is related to "percentage". The seller was left with 60% of his apples (100% - 40% = 60%) when he had 420 apples left.

Solution:

⇒ the 420 apples represent 60% of his original stock (since he sold 40%).

⇒ If 60% of the original stock equals 420 apples, then 1% can be calculated by dividing 420 by 60.

Hence, 1% = 420 ÷ 60 = 7 apples.

⇒ Now, to find the total original stock (100%), the amount per 1% is multiplied by 100.

Therefore, the original amount = 7 × 100 = 700 apples.

Therefore, originally, he had 700 apples.

Explanation

Inverse Proportion:

When one quantity increases, the other decreases in such a way that their product remains constant.

Example: Speed increases → Time to cover the same distance decreases.

Direct Proportion:

When one quantity increases, the other also increases at the same rate.

Example: More hours worked → More wages earned.

Explanation

Let's denote the two integers as x and y, where x > y:

Given x - y = 3 and x² + y² = 89.

From x - y = 3, we get x = y + 3.

Substitute x in the second equation:

(y + 3)² + y² = 89

y² + 6y + 9 + y² = 89

2y² + 6y - 80 = 0

y² + 3y - 40 = 0

(y + 8)(y - 5) = 0

y = -8 (not possible since y is positive) or y = 5.

If y = 5, then x = y + 3 = 8.

Check: 8² + 5² = 64 + 25 = 89.

The integers are 8 and 5.

Explanation

7/4 ÷ [77/8 ÷ 30/5 ]

7/4 ÷ [77/8 × 5/30]

= 7/4 ÷ 77/48

= 7/4 × 48/77

= 12/11

Explanation

In a quadratic equation, the highest power of the variable (usually x) is 2, as in the general form ax² + bx + c = 0.

Explanation