CBES Board Class 10/Chemistry BIOCHEMISTRY MCQS Sample Test,Sample questions

Question:
 Cellulose is obtained from?


 

 

1. animals

2. microorganisms

3. plants

4.bacteria


Question:
 In the structure of DNA how many strands are twisted around each other?


 

 

1.one

2. two

3. three

4. four


Question:
 Strand of RNA is made of

 

1. ribose sugar

2. phosphate unit

3. nitrogen base

4. all of above


Question:
 The condensed structural formula of Caproic acid is

 

 

1. CH3-CH2-CH2-COOH

2. CH3-(CH2)4-COOH

3. CH3-(CH2)14-COOH

4. CH3-(CH2)16-COOH


Question:
 Upon hydrolysis oligosaccharides form

 

 

1.1 to 8 molecules of simple sugars

2. 10 to 12 molecules of simple sugars

3. 5 to 8 molecules of simple sugars

4. 2 to 9 molecules of simple sugars


Question:
 Which of the following activates more than 100 different enzymes?
 

 

1.vitamin A

2.vitamin B

3. vitamin C

4. vitamin D


Question:
 Which of the following is not included in fat-soluble vitamins?



 

1. vitamin A

2. vitamin D

3. vitamin E

4.vitamin B


Question:
Anemia bleeding gums and tongue inflammation is caused by the deficiency of
 

 

1. vitamin A

2.vitamin B

3. vitamin C

4. vitamin D


Question:
Considering the structure of DNA each strand is made up of

 

 

1. deoxyribose sugar

2. phosphate unit

3. nitrogen base

4. all of above


Question:
Deficiency of vitamin A causes




1.night blindness

2.anemia and bleeding gums

3.scurvy

4.rickets and Osteomalacia


Question:
Deficiency of vitamin D causes

1. night blindness

2. anemia and bleeding gums

3. scurvy

4. rickets and Osteomalacia


Question:
Existence of RNA is in the form of

1. single strand

2. double strand

3. triple strand

4. four strands


Question:
Fructose is an example of

1. monosaccharides

2.oligosaccharides

3. polysaccharides

4. vitamins


Question:
How many amino acids are synthesized by our bodies?

1.10

2.20

3.30

4.40


Question:
How many types of vitamins are there?




1.two

2.three

3.four

4.five


Question:
How much energy is provided by 1g of glucose?



 

 

1. 156 KJ

2.168 KJ

3.20 KJ

4.12 KJ


Question:
In the human diet all the cholesterol comes from

1. animal products

2. vegetable products

3.minerals

4.beans


Question:
In what form is glucose stored in animal muscles and liver cells?

 

 

1. glucagon

2. vitamins

3. glycogen

4. starch


Question:
Monosaccharides (simple sugars) have

1. oxidizing nature

2. reducing nature

3. redox nature

4. neutralizing nature


Question:
Nucleic acids were first obtained from


 

 

1. blood of infected wounds

2. pus of infected wounds

3.skin

4. muscles


Question:
Nutrition is derived by cows cattle goats deer sheep and termites from


 

 

1. cellulose

2.starch

3. monosaccharides

4. oligosaccharides


Question:
Plants convert glucose (C6H12O6) in to


 

 

1. starch only

2. cellulose only

3.sucrose

4. starch and cellulose


Question:
Raffinose is an example of

 

 

1. monosaccharides

2. disaccharides

3. polysaccharides

4. Trisaccharides


Question:
Source of butyric acid is

 

 

1. butter

2. palm oil

3. beef fat

4. olive oil


Question:
Source of caproic acid is

1.butter

2. palm oil

3. beef fat

4. olive oil


Question:
Specific organic compounds which are required by our bodies to prevent specific diseases but cannot be produced by our bodies are called

 

 

1. hydrocarbons

2. carbohydrates

3. proteins

4.vitamins


Question:
Starch and cellulose are

1. crystalline solids

2. amorphous solids

3. liquids

4. gasses


Question:
Starch is an example of?




1.monosaccharides

2.oligosaccharides

3.polysaccharides

4.lipids


Question:
The amino acids which are no synthesized by the human body are called

 

 

1. essential amino acids

2. non essential amino acids

3. simple amino acids

4. complex amino acids


Question:
The condensed structural formula of 

1.CH3-CH2-CH2-COOH

2. CH3-(CH2)4-COOH

3.CH3-(CH2)14-COOH

4.Palmitic acid is


Question:
The condensed structural formula of Stearic acid is

 

 

1. CH3-CH2-CH2-COOH

2. CH3-(CH2)4-COOH

3. CH3-(CH2)14-COOH

4.CH3-(CH2)16-COOH


Question:
The general formula of Monosaccharides is



 

 

1.CnH2n+2

2.CnH2n+2

3.CnH2n-2

4.(CH2o)n


Question:
The key to the ability of DNA to pass and store genetic information is its


double stranded structure


 

 

1.hydrogen bonding

2.double stranded structure

3.deoxyribose sugar

4.nitrogen base


Question:
The molecular formula of fructose is


1. C12H22O11

2. C18H32O16

3. C6H12O6

4.C7H14O7


Question:
The physical state of fat at room temperature is



 

 

1.solid

2.liquid

3. gas

4. plasma


Question:
The vitamin which helps in chemical transmission of images from the eye to the brain is

1. vitamin A

2.vitamin B

3.vitamin C

4. vitamin D


Question:
Two fatty acids that are components of fats are
 

 

1. stearic acid and oleic acid

2. butyric acid and caproic acid

3. palmitic acid and oleic acid

4. none of above


Question:
Vitamin B is necessary for



 

 

1. eyes and skin

2.energy production in cells

3.healing wounds and preventing colds

4.bones and teeth


Question:
Vitamin B is soluble in





 

 

1.fat

2.water

3.alcohol

4.ethers


Question:
Vitamin E is necessary for

 

 

1. eyes and skin

2. energy production in cells

3. antioxidant

4. blood clotting


Question:
What happens if water-soluble vitamins are taken in excess?

1.they cause harm

2. they are readily excreted from the body

3. they cause no harm

4. they are not excreted from the body


Question:
When hydrogen is added to an alkene the process is called

1. dehydration

2. Dehydrohalogenation

3. hydrogenation

4. hydrochlorination


Question:
When hydrogen is added to vegetable oils they become

 

 

1. saturated and harder

2. unsaturated and softer

3. saturated and softer

4. unsaturated and harder


Question:
Which of the following are glucose and fructose?

 

 

1. monosaccharides

2. oligosaccharides

3. polysaccharides

4. starch


Question:
Which of the following are obtained from fruits vegetables and cereals?

1. monosaccharides

2. sucrose

3. cellulose

4. starch


Question:
Which of the following causes a feeling of pressure inside the head when taken in excess amount?

 

 

1. vitamin A

2.vitamin B

3. vitamin C

4.vitamin D


Question:
Which of the following causes dry skin when taken in excess amount?


 

 

1. vitamin A

2.vitamin B

3. vitamin C

4.vitamin D


Question:
Which of the following is a code that stores information which is used to produce proteins?

 

 

1. structure of the base pairs

2. order of the base pairs

3. number of the base pairs

4. number of hydrogen


Question:
Which of the following is caused due to an extreme lack of proteins?

1.malaria

2. typhoid

3. kwashiorkor

4. anemia


Question:
Which of the following is important in vision?

 

 

1.vitamin A

2.vitamin B

3. vitamin C

4. vitamin D


Question:
Which of the following is necessary for proper bone and tooth growth?

 

 

1. vitamin A

2.vitamin B

3.vitamin C

4.vitamin D


Question:
Which of the following is obtained by heating bones and tendons in the water?




1.gelatin

2.enzyme

3.amylase

4.lactase


Question:
Which of the following is the key to the ability of DNA to store genetic information and to pass it on from generation to generation?

double stranded structure of DNA



 

 

1.double stranded structure of DNA

2.deoxyribose sugar

3.phosphate unit

4.nitrogen base


Question:
Which of the following is true about DNA?

1. it is present in cell nucleus

2. it has single strand

3. it has ribose sugar

4. it is synthesized by RNA


Question:
Which of the following is used as a catalyst in hydrogenation reaction?



1.Ni

2.Pd

3.Pt

4. all of above


Question:
Which of the following is used in the form of wood for heat housing and furniture?

1. cellulose

2.starch

3.vitamins

4. oligosaccharides


Question:
Which of the following is used to make rectified spirit by fermentation process?

1. cellulose

2. starch

3. glucose

4. fructose


Question:
Which of the following protects our heart and kidneys from injury?


 

 

1. skin

2. muscles

3. lubricants

4.fat


Question:
Which of the following should be fed to hens to lower the amount of cholesterol in eggs?


 

 

1. flax seeds

2. apple seeds

3.banana seeds

4.apricot seeds


Question:
Which of the following used the word vitamin for the missing factors that were needed to sustain healthy growth?

1. C Eijkman

2. FG Hopkins

3. Casmir Funk

4. Jabar Bin Hayan


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