Explanation

The combination of continuous cycles of 30 chest compressions followed by two breaths is called CPR (cardiopulmonary resuscitation).

Explanation

Molecules held together by van der Waals forces form molecular solids.

Weak attractive forces are called Vander Waal's Forces and can be broken with little energy.

This type of attractive force occurs in the case of non-polar molecules such as H2, O2, Cl2, CH4, CO2, etc.

Explanation

A reversible reaction can never proceed to completion.

This is because a reversible reaction is an equilibrium reaction in which both forward and reverse reactions occur at the same rate.

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ND17-1-2023

Explanation

The French scientist Georges Cuvier popularised the concept of catastrophism in the early 19th century

He proposed that

" new life forms had moved in from other areas after local floods, and avoided religious or metaphysical speculation in his scientific writings".

Explanation

Objects like glass through which things can be seen clearly are called transparent objects.

Explanation

Yeast is an anaerobic bacteria that is used as a leavening agent in baking bread and bakery products.

Yeast converts sugar present inside the dough into carbon dioxide and ethanol.

The carbon dioxide forms bubbles which make the dough rise and the resulting bread is soft and fluffy.

Explanation

For a reaction 2A+B→ product, rate law is − dt/ d[A]  =k[A]]

Explanation

A conjugate acid, within the Brønsted–Lowry acid-base theory,

is a chemical compound formed when an acid donates a proton (H+) to a base

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ND17-1-2023

Explanation

In summer, the wet clothes dry quickly because The hot air fastens the process of evaporation

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 concept:

Wet clothes dry due to the evaporation of water from the surface of clothes.

 During summer, the temperature is high. 

So, the rate of evaporation is high.

Hence, wet clothes dry fastest in the summer season.

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ND4-12-2022

Explanation

Hardy-Weinberg's principle states that "gene frequency in a population remains stable and constant from generation to generation".

Hardy and Weinberg used mathematics to describe:

Equilibrium population (p = frequency of A, q = frequency of a, so p + q = 1)

p2 + 2pq + q2 = 1.

Where p and q are frequency of the dominant and recessive allele respectively.

This equation can also be used to calculate the genotypic frequencies in a population at equilibrium.

p2= homozygous dominant frequency

q2= homozygous recessive frequency

2pq= heterozygous frequency