Explanation

Bleach is commonly used as a disinfectant to prevent the spread of illness and disease.

Bleach:

Typically, household bleach contains sodium hypochlorite, which is effective at killing bacteria, viruses, and fungi.

It is widely used in cleaning and disinfecting surfaces, laundry, and water to eliminate harmful microorganisms and reduce the risk of infection.

Explanation

pH stands for "Potential Hydrogen"

Blood is normally slightly basic, with a normal pH range of about 7.35 to 7.45.

Usually, the body maintains the pH of blood close to 7.40.

Acidosis is characterized by a pH of 7.35 or lower. Alkalosis is characterized by a pH level of 7.45 or higher.

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ND11-12-2022

Explanation

Geologists are scientists who study a planet's solid features, like soil, rocks, and minerals.

Explanation

Prokaryotic cells lack membrane-bound organelles.

They do not have structures like a nucleus, mitochondria, or endoplasmic reticulum.

They are characteristic of eukaryotic cells.

Explanation

In paper chromatography, the stationary phase is the paper, which is made of cellulose fibers.

It holds the sample in place while the mobile phase (solvent) moves through it.

Explanation

Isotopes: scientific name of the atoms of the same element with different mass numbers.

Explanation

 Zinc:

1. Loss of appetite
2. stunted growth
3. delayed healing of the wound
4. hair loss
5. diarrhea

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ND2-2-2023

Explanation

Gerontology is a study of the physical aspects of aging and the psychological.

Important GK 

Agrostology: Study of Grasses 

Agronomy: soil management and crop production 

Odontology: study of teeth 

Arthrology:Study of joints 

Nephrology: study of kidneys

Hematology: Study of blood  

Dermatology:  Study of skin 

Explanation

The fundamental units in the SI (International System of Units) are:

1. The meter (m) for length,
2. The kilogram (kg) for mass,
3. The second (s) for time,
4. The ampere (A) for electric current,
5. The kelvin (K) for thermodynamic temperature,
6. The mole (mol) for the amount of substance, 
7. The candela (cd) for luminous intensity.

These seven base units are independent and form the foundation of the SI system, from which all other units are derived. 

Explanation

 Surface tension acts like a "skin" on the water, pulling the molecules at the surface inwards, which naturally leads to a spherical shape as it minimizes the surface area