Questions

Q:

Atomic mass of first 30 elements?

Answer

Here I give you the first 30 Atomic elements names and their Atomic masses.


 


Atomic number      Element        Atomic mass
                             


        1                 Hydrogen           1


        2                  Helium              4


        3                 Lithium              6.94


        4                Beryllium            9.01


        5                  Boron               10.81


        6                Carbon               12.01


        7                Nitrogen             14.01


        8                Oxygen              15.99


        9                Fluorine              19.00


       10                Neon                 20.18


       11               Sodium               22.99


       12             Magnesium           25.31


       13             Aluminium            26.98


       14               Silicon                28.09


       15             Phosphorus           30.97


       16               Sulphur               32.07


       17               Chlorine              35.45


       18                Argon                 39.95


       19             Potassium              39.10


       20              Calcium                40.08


       21             Scandium              44.96


       22             Titanium               47.87


       23            Vanadium              50.94


       24             Chromium            24. 52


       25            Manganese            54.94


       26                Iron                  55.85


       27              Cobalt                 58.93


       28               Nickel                 58.69


       29              Copper                 63.55


       30                Zinc                   65.41

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2 4028
Q:

Which of the following is true of kinetochores?

A) They are the primary centrosome structures that maintain the attachment of the sister chromatids prior to mitosis. B) They are the sites at which microtubules attach to chromosomes.
C) They are located at the center of the centrosome and organize tubulin into spindle fibers. D) They cross at the cell's equator and move against each other, causing the cell to elongate.
 
Answer & Explanation Answer: B) They are the sites at which microtubules attach to chromosomes.

Explanation:

They are the sites at which microtubules attach to chromosomes.

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2 4027
Q:

During the freedom struggle a parallel movement launched in the Indian states (in the states ruled by the indian rulers such as Kashmir, Nizam's Hyderabad, Travancore etc) was/ were

A) State people's Movement B) Praja Mandal Movement
C) Swaraj Movement D) Both (a) and (b)
 
Answer & Explanation Answer: D) Both (a) and (b)

Explanation:
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Filed Under: Indian History

2 4026
Q:

Improving muscular strength and endurance slows bone density loss.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

2928muscle_strength1540977766.jpg image


Improving muscular strength and endurance slows bone density loss.

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Subject: Biology
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0 4025
Q:

Which monument is known as "The National Monument of India"?

A) India Gate B) Gateway of India
C) Raj Ghat D) Red fort
 
Answer & Explanation Answer: A) India Gate

Explanation:
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Filed Under: Famous Places

7 4024
Q:

Which object, initially called the 'Whirlwind', was invented by Ives McGaffey in 1869 ?

A) Washing machine B) Electric mixer
C) Vacuum cleaner D) Blender
 
Answer & Explanation Answer: C) Vacuum cleaner

Explanation:
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Filed Under: Inventions

7 4022
Q:

Which Soil is Suitable for Agriculture?

A) Alluvial Soils B) Red Soils
C) Sandy Soils D) Peaty Soils
 
Answer & Explanation Answer: A) Alluvial Soils

Explanation:

1. Each type of soil benefits different types of crops through their unique physical, chemical and biological properties.

 

2. Alluvial Soils are best suitable for Agriculture. This soil is a fertile soil which is rich in potassium.

 

3. It is best especially for crops such as paddy, sugarcane,...

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16 4022
Q:

Is water a Pure substance?

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, Water is a Pure substance and not a mixture.


 


We know that, A mixture is when two or more substances combine physically together. You can find that the mixture retains the properties of the original components.


In water, two hydrogen atoms combine with one oxygen atom chemically, forming a new substance that has properties different from hydrogen alone or oxygen alone.


 


Therefore, water is not a mixture; it is a compound and it is pure.

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3 4021