Second Term Test - Quiz 01: Attempt review

Started on	Friday, 4 September 2020, 6:21 PM
State	Finished
Completed on	Friday, 4 September 2020, 7:08 PM
Time taken	46 mins 43 secs
Grade	80.00 out of 100.00

Question 1

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The atomic number of a certain element is 16. The answer correctly denoting the valency of that element and the period to which it belongs in the periodic table in respective order are,

3,2

ii.

2,3

iii.

6,3

iv.

2,6

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The correct answer is:

6,3

Question 2

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Not dissolved in water is,

Glycogen

ii.

Fructose

iii.

Maltose

iv.

Glucose

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The correct answer is:

Glycogen

Question 3

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Present in a plant cell, the organelle that cannot be observed with a light microscope is,

Chlorophyll

ii.

Cell walls

iii.

Vacuole

iv.

Ribosomes

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The correct answer is:

Ribosomes

Question 4

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Select the incorrect statement

Metal oxides are dissolved in water and bases are formed

ii.

Non-metal oxides are acidic

iii.

Metal oxides mostly exists in solid states

iv.

Metallic atoms form anions by gaining electrons

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The correct answer is:

Metallic atoms form anions by gaining electrons

Question 5

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Select the incorrect statement with regard to friction,

When a force is exerted on an object the frictional force acts on it before the start of the motion of the object is known as static friction

ii.

The maximum frictional force created between the contact surface of 2 objects in contact is named as limiting frictional force

iii.

The dynamic frictional force is little more than limiting frictional force

iv.

The frictional force existing when the motion of the object begins is termed as dynamic force

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The correct answer is:

The dynamic frictional force is little more than limiting frictional force

Question 6

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An element contributing to form hemoglobin pigment which is responsible for the red color in blood is,

Magnesium

ii.

Potassium

iii.

Iron

iv.

Sodium

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The correct answer is:

Iron

Question 7

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The velocity of an object during 6 seconds uniformly increased from 0 to 12 ms^{- 2}The acceleration of that object could be

12ms^{- 2}

ii.

6ms^{- 2}

iii.

3ms^{- 2}

iv.

2ms^{- 2}

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The correct answer is:

2ms^{- 2}

Question 8

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The most common organic compound on the surface of the earth is,

Fat

ii.

Carbohydrate

iii.

Water

iv.

Protein

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The correct answer is:

Carbohydrate

Question 9

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Not a method of reducing friction,

Reducing area of the contact surface

ii.

Applying substances such as grease, lubricant oil etc. between 2 contact surfaces

iii.

Making the contact surface smooth

iv.

Using ball bearings

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The correct answer is:

Reducing area of the contact surface

Question 10

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Which of the following can be considered as carbonic catalysts that speed up bio-chemical reactions occurring in organisms

Nucleic Acids

ii.

Hormones

iii.

Amino Acid

iv.

Enzymes

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The correct answer is: Enzymes

Question 11

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The only sugar absent in plants

Sucrose

ii.

Galactose

iii.

Maltose

iv.

Lactose

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The correct answer is:

Galactose

Question 12

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The answer containing only the vector quantities

Time, Temperature, Force

ii.

Acceleration, Displacement, Mass

iii.

Velocity,Weight, Displacement

iv.

Speed, Acceleration, Displacement

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The correct answer is:

Velocity,Weight, Displacement

Question 13

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A child walked 50 meters in the eastern direction and returned 60 meters backwards. The answer denoting the values is respective order regarding the distance he walked and his displacement are,

10,110

ii.

110,60

iii.

110,10

iv.

110,50

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The correct answer is:

110,10

Question 14

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The protein contained in hair, bird feather etc. is,

Keratin

ii.

Collagen

iii.

Dasein

iv.

Actine

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The correct answer is:

Keratin

Question 15

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Which vitamin deficiency causes the appearance of thorn-like blisters in the elbow, knee etc.

Vitamin E

ii.

Vitamin B

iii.

Vitamin A

iv.

Vitamin C

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The correct answer is:

Vitamin A

Question 16

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A phenomenon that can not occur when imbalanced force acts on an object is,

Object moving in deceleration

Object moving in a uniform velocity

Object moving with an acceleration

Gradual decrease of the velocity

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The correct answer is:

Object moving with an acceleration

Question 17

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Considered as fruit sugar

Lactose

ii.

Sucrose

iii.

Maltose

iv.

Fructose

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The correct answer is: Fructose

Question 18

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Select the incorrect statement

The fluid present in a vacuole is named as cell sap.

ii.

The cell wall of a plant cell is non living

iii.

Ribosomes are fixed to the surface of rough endoplasmic reticula

iv.

At the end of mitosis four daughter cells are formed

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The correct answer is:

At the end of mitosis four daughter cells are formed

Question 19

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The formula of a certain compound is X₂y_3,

select the covalencies of elements x and y in respective order

4,6

ii.

2,4

iii.

2,3

iv.

3,2

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The correct answer is:

3,2

Question 20

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A complex vitamin is,

Vitamin B

ii.

Vitamin D

iii.

Vitamin E

iv.

Vitamin A

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The correct answer is:

Vitamin B

Question 21

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The time-velocity graph about a certain object is shown below. Select the true statement about the motion of the object. graph

The object has moved in uniform deceleration in the same direction

ii.

The object has moved in uniform acceleration in the same direction

iii.

First the object has accelerated uniformly in one direction and then decelerated uniformly in opposite direction

iv.

First the object has decelerated uniformly in one direction and then accelerated uniformly in opposite direction

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The correct answer is:

First the object has decelerated uniformly in one direction and then accelerated uniformly in opposite direction

Question 22

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The element needed to produce thyroxine hormone is,

Myosine

ii.

Iodine

iii.

Iron

iv.

Potassium

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The correct answer is:

Iodine

Question 23

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Not a homogeneous mixture

Lime and water solution

ii.

Alloys

iii.

Sugar solution

iv.

Salt solution

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The correct answer is: Lime and water solution

Question 24

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The scientist who deserve the honor in putting forward the cell theory is,

Robert Hook

ii.

Schleiden and Schwann

iii.

Alexander Fleming

iv.

Dimithree Mandaleev

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The correct answer is:

Schleiden and Schwann

Question 25

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The scientist who put forward planetary model about the atom is,

Ernest Rutherford

ii.

James Chadwick

iii.

Neil Bohr

iv.

J.J.Thompson

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The correct answer is:

Ernest Rutherford

Question 26

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The vitamin significant for the formation of constituents needed for blood clotting is,

Vitamin K

ii.

Vitamin E

iii.

Vitamin B

iv.

Vitamin D

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The correct answer is:

Vitamin K

Question 27

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The element containing highest percentage in human body is,

Nitrogen

ii.

Hydrogen

iii.

Oxygen

iv.

Carbon

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The correct answer is:

Oxygen

Question 28

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The incorrect statement with regard to plasma membrane in cell is,

It is present exterior to the cell wall of plant cells

ii.

It is mainly composed of pospho lipids and proteins

iii.

It controls entrance and out going of substances to the cell

iv.

It is a semi-permeable membrane

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The correct answer is:

It is present exterior to the cell wall of plant cells

Question 29

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The time displacement graph denoting the gradual increase of velocity is,

graph

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The correct answer is:

graph

Question 30

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It is not a characteristic feature of a metal

Ductility

ii.

Brittleness

iii.

Sonorous Sound

iv.

Malleability

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The correct answer is:

Brittleness

Question 31

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The forces needed to give an acceleration of 1 ms^-2On an object in which the mass is one kilogram is,

ii.

0.1N

iii.

100N

iv.

10N

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The correct answer is:

Question 32

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A protein containing in egg-white,

Keratin

ii.

Albumin

iii.

Myosine

iv.

Legumene

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The correct answer is:

Albumin

Question 33

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Not an occasion on compare with Newton's third law

Riding a canoe with paddling an oar

ii.

Motion of a steam boat in the opposite direction of it, steam emits.

iii.

When a carom disc is hit it stops after moving a little distance

iv.

The motion of the rocket in opposite direction to its smoke emitting direction

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The correct answer is:

When a carom disc is hit it stops after moving a little distance

Question 34

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Put some boiled rice in a crucible and heat strongly the end product is rubbed agaist a white paper to get lines drawn. According to these observations the element that may be present in the food is,

Oxygen

ii.

Carbon

iii.

Nitrogen

iv.

Hydrogen

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The correct answer is: Carbon

Question 35

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The answer containing examples orderly for monosaccharide, disaccharide and polysaccharide,

Galactose, Sucrose, Glycogen

ii.

Glycogen, Maltose, Fructose

iii.

Starch, Fructose, Cellulose

iv.

Sucrose, Maltose, Glucose

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The correct answer is:

Galactose, Sucrose, Glycogen

Question 36

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The ration between H and O in carbohydrates is,

1:3

ii.

2:1

iii.

3:1

iv.

1:2

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The correct answer is: 2:1

Question 37

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Can be considered as speed are,

Rate of changing velocity

ii.

Rate of changing distance

iii.

Rate of changing acceleration

iv.

Rate of changing displacement

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The correct answer is:

Rate of changing distance

Question 38

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Cramps are caused by,

Sodium deficiency

ii.

Phosphorus deficiency

iii.

Iron deficiency

iv.

Iodine deficiency

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The correct answer is:

Sodium deficiency

Question 39

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Select the correct statement regarding the sub atomic particles

Charges of protons and electrons are equal

ii.

Charges of protons and neutrons are equal

iii.

Mass of protons and electrons is equal

iv.

Mass of protons and neutrons is equal

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The correct answer is:

Mass of protons and neutrons is equal

Question 40

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Not a use of friction

Stopping a vehicle by applying brakes

ii.

Ability to walk without being slipped on a surface

iii.

Ability to exert a great force on ropes made by twisting coir fibers

iv.

Decrease of the efficiency of a machine when operating using energy

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The correct answer is:

Decrease of the efficiency of a machine when operating using energy

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