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SBI PO Exam General Awareness Study Material

Digitization help student to explore and study their academic courses online, as this gives them flexibility and scheduling their learning at their convenience. Kidsfront has prepared unique course material of General Awareness Science for SBI PO Exam student. This free online General Awareness study material for SBI PO Exam will help students in learning and doing practice on Science topic of SBI PO Exam General Awareness. The study material on Science, help SBI PO Exam General Awareness students to learn every aspect of Science and prepare themselves for exams by doing online test exercise for Science, as their study progresses in class. Kidsfront provide unique pattern of learning General Awareness with free online comprehensive study material and loads of SBI PO Exam General Awareness Science exercise prepared by the highly professionals team. Students can understand Science concept easily and consolidate their learning by doing practice test on Science regularly till they excel in General Awareness Science.

Science

Ice is packed in saw dust because

a) Saw dust is poor conductor of heat.
b) Saw dust is a good conductor of heat.
c) Saw dust does not stick to the ice.
d) Saw dust will not get melted easily.

✔Answer

✔Solution

Correct Answer Is : Saw dust is poor conductor of heat.

Solution Is : When ice is kept on saw dust then it does not melt quickly as it`s an insulator of heat and air does not circulate in good insulators . So, it prevents ice from melting quickly .

What happens when a drop of glycerol is added to crushed KMnO, spread on a paper ?

a) There is a violent explosion.
b) There is no reaction.
c) The paper ignites.
d) There is a crackling sound.

✔Answer

✔Solution

Correct Answer Is : There is a violent explosion.

Solution Is : When a drop of Glycerol is added to crushed KMnO4 spread on a paper there is a violent explosion.

Most commonly used bleaching agent is

a) Alcohol
b) Carbon dioxide
c) Chlorine
d) Sodium chloride

✔Answer

✔Solution

Correct Answer Is : Chlorine

Solution Is : A bleaching agent is a material that lightens or whitens a substrate through chemical reaction. The most common bleaching agents generally fall into two categories: chlorine and its related compounds (such as sodium hypochlorite) and the peroxygen bleaching agents, such as hydrogen peroxide and sodium perborate.

The least penetrating power ray is

a) ?-Ray
b) ß-Ray
c) ?-Ray
d) X-Ray

✔Answer

✔Solution

Correct Answer Is : ?-Ray

Solution Is : Alpha particles are the least penetrating as they are the most densely ionizing. The penetrating power of nuclear radiation depends upon the ionizing power of the radiation. The more localised the ionization the less penetrating power it will possess.

Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen?

a) Water
b) Hydrogen
c) Ozone
d) Nascent Hydrogen

✔Answer

✔Solution

Correct Answer Is : Water

Solution Is : Hydrogen- peroxide is an effective sterilizing agent. Water results when it readily loses active oxygen.

The maximum fixation of solar energy is done by

a) Bacteria
b) Fungi
c) Green plants
d) Protozoa

✔Answer

✔Solution

Correct Answer Is : Green plants

Solution Is : The maximum fixation of solar energy is done by green plants. The energy is stored in the plants as carbohydrates for their metabolic activities as growth, respiration etc.

The term ‘brown air’ is used for

a) Photochemical smog
b) Sulphurous smog
c) Industrial smog
d) Acid fumes

✔Answer

✔Solution

Correct Answer Is : Photochemical smog

Solution Is : The term `brown air` is used for photochemical smog. The brown colour is cause by the presence of a various Nitrous Oxides.

Peroxyacetyl nitrate is a

a) Plant hormone
b) Vitamin
c) Secondary pollutant
d) Acidic dye

✔Answer

✔Solution

Correct Answer Is : Secondary pollutant

Solution Is : Peroxyacetyl nitrate is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas.

Cyanide poisoning causes death in seconds because

a) It denatures enzymes of the heart/muscle
b) It breaks the electron transport chain
c) It causes Lys is of red blood cells.
d) It causes cardiac arrest

✔Answer

✔Solution

Correct Answer Is : It causes cardiac arrest

Solution Is : Cyanide poisoning causes death in seconds because it causes cardiac arrest

Xenobiotics which are inherently resistant to microbial attack are called as:

a) Biodegradable
b) Persistent
c) All of the given options
d) Recalcitrant

✔Answer

✔Solution

Correct Answer Is : Recalcitrant

Solution Is : Xenobiotics which are inherently resistant to microbial attack are called as: Recalcitrant

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SBI PO Exam General Awareness Study Material

Science

Ice is packed in saw dust because

Correct Answer Is : Saw dust is poor conductor of heat.

Solution Is : When ice is kept on saw dust then it does not melt quickly as it`s an insulator of heat and air does not circulate in good insulators . So, it prevents ice from melting quickly .

What happens when a drop of glycerol is added to crushed KMnO, spread on a paper ?

Correct Answer Is : There is a violent explosion.

Solution Is : When a drop of Glycerol is added to crushed KMnO4 spread on a paper there is a violent explosion.

Most commonly used bleaching agent is

Correct Answer Is : Chlorine

The least penetrating power ray is

Correct Answer Is : ?-Ray

Solution Is : Alpha particles are the least penetrating as they are the most densely ionizing. The penetrating power of nuclear radiation depends upon the ionizing power of the radiation. The more localised the ionization the less penetrating power it will possess.

Hydrogen peroxide is an effective sterilizing agent. Which one of the following product results when it readily loses active oxygen?

Correct Answer Is : Water

Solution Is : Hydrogen- peroxide is an effective sterilizing agent. Water results when it readily loses active oxygen.

The maximum fixation of solar energy is done by

Correct Answer Is : Green plants

Solution Is : The maximum fixation of solar energy is done by green plants. The energy is stored in the plants as carbohydrates for their metabolic activities as growth, respiration etc.

The term ‘brown air’ is used for

Correct Answer Is : Photochemical smog

Solution Is : The term `brown air` is used for photochemical smog. The brown colour is cause by the presence of a various Nitrous Oxides.

Peroxyacetyl nitrate is a

Correct Answer Is : Secondary pollutant

Solution Is : Peroxyacetyl nitrate is a secondary pollutant present in photochemical smog. It is thermally unstable and decomposes into peroxyethanoyl radicals and nitrogen dioxide gas.

Cyanide poisoning causes death in seconds because

Correct Answer Is : It causes cardiac arrest

Solution Is : Cyanide poisoning causes death in seconds because it causes cardiac arrest

Xenobiotics which are inherently resistant to microbial attack are called as:

Correct Answer Is : Recalcitrant

Solution Is : Xenobiotics which are inherently resistant to microbial attack are called as: Recalcitrant

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