Questions

Q:

Which two atoms form an ionic bond?

Answer

Ionic bonding is a type of chemical bond in which valence electrons are lost from one atom and gained by another.. This bond generates two oppositely charged ions.


In ionic bonds, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.


 


Example ::


One example of an ionic bond is the formation of sodium fluoride, NaF, from a sodium atom and a fluorine atom. In this reaction, the sodium atom loses its single valence electron to the fluorine atom, which has just enough space to accept it. The ions produced are oppositely charged and are attracted to one another due to electrostatic forces.

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Q:

Which equation is an example of a synthesis reaction?

A) 2H2 + O2 → 2H2O B) Na + Cl → NaCl
C) HA + BOH → H2O + BA D) NaCl + AgNO3 → NaNO3 + AgCl
 
Answer & Explanation Answer: B) Na + Cl → NaCl

Explanation:

When two or more chemical species combine to form a single product, the reaction is said to be synthesis reaction. It is also called as Direct Combination reaction.

 

Here in the given options, Sodium (Na) combines with Chlorine (Cl) to form a more complex single product Sodium Chloride (NaCl).

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Q:

I have two bodies joined together as one. When standing still. I ran and ran. What am I?

Answer

An Hourglass has two bodies joined together on standing still it ran from one to the other.

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Q:

Instrument for measuring work performed is called _________.

A) Eudiometer B) Anemometer
C) Hyetometer D) Ergometer
 
Answer & Explanation Answer: D) Ergometer

Explanation:
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Q:

India's heaviest satellite built by ISRO is

A) GSAT - 11 B) GSAT - 09
C) GSAT - 13 D) GSAT - 10
 
Answer & Explanation Answer: A) GSAT - 11

Explanation:

India’s heaviest satellite GSAT-11 launched successfully from French Guiana. GSAT-11 is going to provide high data connectivity of 16 GBPS to the country.

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Q:

In which body cavities are the lungs located

A) Pelvic cavity B) Thoracic cavity
C) Abdominal cavity D) Body cavity
 
Answer & Explanation Answer: B) Thoracic cavity

Explanation:
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Q:

The HIV retrovirus is particularly deadly because

A) I can become AIDS shortly afte being contracted B) It attacks the body immune system
C) Treatments can be dangerous for patients D) Its hard to diagnose accurately
 
Answer & Explanation Answer: B) It attacks the body immune system

Explanation:

HIV is a virus that damages the immune system. HIV is a lifelong condition, and without treatment, a person with HIV can develop AIDS.

The_HIV_retrovirus_is_particularly_deadly_because1563452540.jpg image

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Q:

Rearrange the parts of the sentence in correct order.
 
Gender inequality has
 
P :it reduces economic growth
Q :development goals as
R :adverse impact on

A) RPQ  B) RQP
C) PRQ D) QPR
 
Answer & Explanation Answer: B) RQP

Explanation:
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