Answer: The substances like CO2 and water move in and out of a cell by diffusion from the region of high concentration to low concentration. When the concentration of CO2 and water is higher in external environment than that inside the cell, CO2 and water moves inside the cell.

A Clean Glass Container is best for making yogurt. Food-grade plastic can also be used but is not an ideal choice for yogurts that incubate at warm temperatures. Yogurt can be made in one large container or in single-serving containers. Why should curd not be kept in brass? Curd and other sour substances contain acids.

Paramagnetism, ferromagnetism and spin waves. Ferromagnetism is a property of certain materials (such as iron) that results in a significant, observable magnetic permeability, and in many cases, a significant magnetic coercivity, allowing the material to form a permanent magnet. Ferromagnetic materials are familiar metals that are noticeably.

when kept in copper or brass vessels,curd (and other acidic food items) reacts with copper and forms toxic compounds which may be unfit for human consumption,and may cause food.

Why primary standard substances are used to make standard solutions. Primary standards are typically used in titration to determine an unknown concentration and in other analytical chemistry techniques. Titration is a process in which small amounts of a reagent are added to a solution until a chemical reaction occurs. The reaction confirms that.

By reducing the amount of traditional plastics that contaminate food waste, we can at least ensure that some of that wasted food is eventually used as compost, rather than ending up in landfill or.

Non-biodegradable substances: These are called non-biodegradable because they cannot be decomposed by natural biological processes such as the decomposition by microorganisms. These substances persist for a long time in the environment due to this ability.

Biodegradable substances affect the environment by: 1. The biodegradable substances such as tree leaves, plant parts, and kitchen wastes can be used as humus after composting. This will enhance the soil fertility. 2. The biodegradable substances mainly contain carbon. These substances after decomposition release that carbon back into the.

2. Biodegradable alternatives to conventional plastics. Biodegradable polymers (BDPs) or biodegradable plastics refer to polymeric materials that are ‘capable of undergoing decomposition into carbon dioxide, methane, water, inorganic compounds, or biomass in which the predominant mechanism is the enzymatic action of microorganisms, that can be measured by standardized tests, in a specified.

Substances are classified as biodegradable and non-biodegradable because some substances can be decomposed by microorganisms and some cannot. Substances that are broken down into simple soluble forms are called biodegradable substances For example: Cotton, wood, paper, wool, etc.

The species that loses electrons is said to be oxidized, while the species that gains electrons is said to be reduced. We can identify redox reactions using oxidation numbers, which are assigned to atoms in molecules by assuming that all bonds to the atoms are ionic.