CBSE Class 10th Science Mix Test

Result

CBSE Class 10th Science Mix Test - 5

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Weekly Quiz Competition

Question 1
1 / -0

The main function of villi, present in the small intestine , is :

A
Absorption of food

B
Assimilation

C
Digestion of food

D
Excretion

Solution

Functions of villi: The finger- like projections known as villi, drastically increase the surface area of the small intestine for greater absorption of the digested food.
Question 2
1 / -0

If a soft iron is placed inside the solenoid, the magnetic field ....

A
Becomes stronger

B
Is reduced

C
Remains the same

D
Can not be said.

Solution

The soft iron inside the coil becomes a magnet when current flows through the coil and it makes the magnetic field stronger.
Question 3
1 / -0

Chromosomes in the nucleus of the cell contain information for inheritance of features from parents to next generation in the form of DNA molecules.

The DNA in the cell nucleus is the information source for making:

A
Proteins

B
Cretin

C
Lipids

D
None
Question 4
1 / -0

Chromosomes in the nucleus of the cell contain information for inheritance of features from parents to next generation in the form of DNA molecules.

A basic event in reproduction is the creation of a

A
DNA blueprint

B
Protein formation

C
Chromosomal crossing over

D
None.
Question 5
1 / -0

Chromosomes in the nucleus of the cell contain information for inheritance of features from parents to next generation in the form of DNA molecules.

Reproducing cell creates:

A
One copy of DNA

B
Two copies of the DNA

C
Three copies of the DNA

D
None
Question 6
1 / -0

Chromosomes in the nucleus of the cell contain information for inheritance of features from parents to next generation in the form of DNA molecules.

If DNA information is changed, it leads to:

A
Similar body designs

B
Altered body designs

C
Abnormal body designs

D
None
Question 7
1 / -0

Chromosomes in the nucleus of the cell contain information for inheritance of features from parents to next generation in the form of DNA molecules.

Variations in DNA copying is essential as it is useful for:

A
Stability of the species

B
Survival of the species

C
Maintenance of body design features

D
All
Question 8
1 / -0

Copper and aluminium wires are usually employed for electricity transmission because ....

A
They have low resistance

B
They are excellent conductors

C
They are resistant to corrosion

D
All.

Solution

Copper and aluminium are most frequently used as the electrical conductors in electricity transmission due to their low resistance and excellent conductivity. These metals are ductile and resistant to corrosion. Aluminium is abundantly available and offers a cheaper alternative to copper for conductors.
Question 9
1 / -0

Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right hand rule and predict the direction of the magnetic field inside the loop.

A
Going into the table

B
Coming out of the table

C
Towards south

D
Towards north.

Solution

The current is flowing clockwise. If we are applying right hand thumb rule to the left side of the loop, then the direction of magnetic field lines inside the loop are going into the table while outside the loop they are coming out of the table.
Question 10
1 / -0

In the following reaction, alcohol is converted to carboxylic acid:

\(CH_3-CH_2OH \to CH_3COOH\)

The oxidizing agent in above reaction is:

A
\(\mathrm{Alkaline}\, KMnO_4\)

B
\(\mathrm{Acidified}\,K_2Cr_2O_7\)

C
\(AgNO_3\)

D
\(\text{Both (A) and (B).}\)
Question 11
1 / -0

In the following reaction, alcohol is converted to carboxylic acid:

\(CH_3-CH_2OH \to CH_3COOH\)

Oxidizing agents are the one which

A
Add oxygen

B
Add hydrogen

C
Remove oxygen

D
None
Question 12
1 / -0

In the following reaction, alcohol is converted to carboxylic acid:

\(CH_3-CH_2OH \to CH_3COOH\)

IUPAC name of \(CH_3-CH_2OH\) is:

A
Ethanone

B
Ethanoic acid

C
Ethanol

D
None
Question 13
1 / -0

In the following reaction, alcohol is converted to carboxylic acid:

\(CH_3-CH_2OH \to CH_3COOH\)

IUPAC name of \(CH_3COOH\) is:

A
Propanone

B
Propanoic acid

C
Methanol

D
Ethanoic acid
Question 14
1 / -0

In the following reaction, alcohol is converted to carboxylic acid:

\(CH_3-CH_2OH \to CH_3COOH\)

Ethanol is an important industrial solvent. It is made unfit for drinking by adding poisonous substance to it, like:

A
Methanol

B
Mercury chloride

C
Carboxylic acids

D
None
Question 15
1 / -0

The type of reaction when vegetable matter decomposes into compost is....

A
Decomposition reaction

B
Displacement reaction

C
Neutralization reaction

D
Combination reaction.

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Re-Attempt Weekly Quiz Competition

CBSE Class 10th Science Mix Test - 5

Result

CBSE Class 10th Science Mix Test - 5

Score

-

Rank

-

SHARING IS CARING

Question 1

Absorption of food

Assimilation

Digestion of food

Excretion

Solution

Question 2

Becomes stronger

Is reduced

Remains the same

Can not be said.

Solution

Question 3

Proteins

Cretin

Lipids

None

Question 4

DNA blueprint

Protein formation

Chromosomal crossing over

None.

Question 5

One copy of DNA

Two copies of the DNA

Three copies of the DNA

None

Question 6

Similar body designs

Altered body designs

Abnormal body designs

None

Question 7

Stability of the species

Survival of the species

Maintenance of body design features

All

Question 8

They have low resistance

They are excellent conductors

They are resistant to corrosion

All.

Solution

Question 9

Going into the table

Coming out of the table

Towards south

Towards north.

Solution

Question 10

\(\mathrm{Alkaline}\, KMnO_4\)

\(\mathrm{Acidified}\,K_2Cr_2O_7\)

\(AgNO_3\)

\(\text{Both (A) and (B).}\)

Question 11

Add oxygen

Add hydrogen

Remove oxygen

None

Question 12

Ethanone

Ethanoic acid

Ethanol

None

Question 13

Propanone

Propanoic acid

Methanol

Ethanoic acid

Question 14

Methanol

Mercury chloride