Bacteriophage

Bacteriophage

Bacteriophage is the term referred to a virus that used bacteria as their host. Bacteria creates two types of toxin which are: Exotoxin Edotoxin Exotoxin A component of toxin obtained from gram More »

VARIOUS WATER USED FOR MEDIA PREPATION

VARIOUS WATER USED FOR MEDIA PREPATION

PEPTONE WATER This is water that is use for examination of water sugar called peptone water sugar. The water is for preparation of sugar media and also used for cultivation of vibro More »

TYPE OF MEDIA AND IT COMPOSITION

TYPE OF MEDIA AND IT COMPOSITION

Nutrient Broth Nutrient Broth: these media is used for growing fastidious bacteria that is an organism that is not too difficult to cultivate. These media are basal media, in such case use More »

Culture production evolution

Culture production evolution

On the origin of bacteriology, the culture media used by then are ox Heart or Calf brain. But with the advancement of knowledge of bacteriology, this type of media is drastically disappearing More »

FAULT IN CULTURE MEDIA

FAULT IN CULTURE MEDIA

There are varieties of fault found in culture media mostly when preparation of dehydrated media is in progress such as; Inappropriate weigh, inaccurate measure of water: this problem take place as a More »

Culture production evolution

Culture production evolution

On the origin of bacteriology, the culture media used by then are ox Heart or Calf brain. But with the advancement of knowledge of bacteriology, this type of media is drastically disappearing More »

HOW TO ISOLATE A SINGLE COLONY

HOW TO ISOLATE A SINGLE COLONY

For isolation of a single colony, there are step required to inoculate the petri dish before the mission can be accomplished. The steps are; Sterile wire loop, take a loopful specimen and More »

Microbiology cultural techniques

Microbiology cultural techniques

TUBE CULTURE TECHNIQUE This culture technique involved the following; stop culture, deep culture and roll culture. Slope Culture: several test technique is used to classified micro organism preferably on solid medium, slope More »

Use of petri dish for culturering

Use of petri dish for culturering

In other to study the features and the characteristics of micro organism colonies, petri dish is the apex apparatus used for the task. Petri is shallow, flat and have a large surface More »

HOW TO STORE PREPEARD MEDIA

HOW TO STORE PREPEARD MEDIA

required environment to store prepared media Just like order substance in the laboratory like the way we store chemicals, which chemical have there own environment which they can be stored, so do More »

TYPE OF MICROBIOLOGY CULTURE MEDIA

TYPE OF MICROBIOLOGY CULTURE MEDIA

Media is group in to two which are; Liquid media, and solid media. Liquid media: as the name implied, these types of media are liquid in nature, they are used to culture More »

HYDROGEN ION CONCENTRATION CULTURE MEDIA

HYDROGEN ION CONCENTRATION CULTURE MEDIA

HYDROGEN ION CONCENTRATION This is the acidic or basic content required by the micro organism to growth. The PH of bacteria varies, some required acidic environment before they can growth, some other More »

CRETERIA OF CULTURE MEDIA

CRETERIA OF CULTURE MEDIA

These mean the status which the media must ascertain before they can support the growth of bacteria, moisture, carbon, and nitrogen substance are very essential for artificial media to meet there requirement More »

USE OF CULTURE MEDIA

USE OF CULTURE MEDIA

Culture media Cultue media: is a simple and artificial food which micro organism required for it growth. Before organism can be study, it must first of all be culture and isolated, this More »

CONTROL OF FILTRATION PROCESS

CONTROL OF FILTRATION PROCESS

CONTROL OF FILTRATION PROCESS This simply means the process where filtration is directed to achieve a satisfactory result of filtration. In filtration there are some challenge face, this can be overcome by More »

STERILIZATION BY FILTRATION

STERILIZATION BY FILTRATION

STERILIZATION BY FILTRATION The first approach on how to purify water where carried out by allowing water to pass through a bed of sand gavel and cinders. But as the knowledge of More »

GASEOUS STERILIZATION

GASEOUS STERILIZATION

GASEOUS STERILIZATION There are some chemical substances which are gaseous in nature that are used in the laboratory for sterilization i.e formaldehyde and ethylene oxide. This substance is used as an alternative More »

CHEMICAL AGENT FOR STERILIZATION

CHEMICAL AGENT FOR STERILIZATION

CHEMICAL AGENT There are several chemical agent is used for disinfection. Disinfectant is a chemical substance that destroyed microorganism in an inanimate object. The chemical agent that kill germs or inhibit it More »

LOW TEMPERATURE STERILIZATION

LOW TEMPERATURE STERILIZATION

LOW TEMPERATURE STERILIZATION Biological fluid also sterilized by heating it with water bath at a temperature of 56ºC for period of one hour. This process required continuous sterilization in a daily interval More »

CHEMICAL STERILIZATION

CHEMICAL STERILIZATION

Chemical sterilization is one of the frequently used methods of sterilization in the laboratory and the entire hospital. The ways which chemical are used for sterilization depend on the strength and effect More »

 

CHM101 INTRODUCTORY INORGANIC CHEMISTRY TMA 4 QUESTION AND ANSWER

Question 1. Which of these is not attributed to alkali earth metal? Answer is production of jar

Question 2. Which of the following is not a radioactive elements?

Option given

Polonium

Francium

Uranium

None of the above

The answer is non of the above

Question 3. Which of these bonds has the weakest bond energy?

Answer is metallic bond

Question 4. Decrease in hydration energy makes a compound_______?

Answer is insoluble

Question 5. All cations are smaller than all common anaions except for one of these?

Answer is sodium cation

Questions 6. Which of the following scientists never made any contributions to the development of periodic table?

Answer is T.M peters

Question 7. The attractive force which binds a hydrogen atom of one molecules with an electronegative atom molecules of the same compound is called________?

Answer is hydrogen bond

Question 8. Which of these element dose not belong to the alkali metals?

Answer is Radium

Question 9. Which of these hydride is electron deficient?

Answer is magnesium, beryllium, and aluminum hydride.

Question 10. Which of these increase the solubility of compound?

Answer is a small action and a large anions

Question 11. Ionization energy _________ down the group within the alkali metals

Answer is increase

Question 12. ______ is define as one-half of the distance between the nuclei of two adjacent metal atoms in the close packed crystals lattice?

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Answer is metallic radius

Question 13. Silt is an example of __________ hydride?

Answer is covalent

Questions 14. A consequence of _______ is the formation of chelate ring?

Answer is intramolecular hydrogen bond

Question 15. How many type of sulphides are formed when alkali metals react with sulphur?

Answer is 2

Question 16. When a metal is surrounded by solvent molecules excluding water, the phenomenon is called ____ of the metal ion?

Answer solvation

Question 17. The most abundant metal in sea water is_____?

Answer is sodium

Questions 18 potassium compound can used for the following?

Answer is liquid detergent, plant fertilizer.

Question 19. Hydride of alkali metals react with water to liberate _____?

Answer is hydrogen

Question 20. Which of this is not a properties of hydrogen?

Answer is it has a pungent smell.

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