16
Q:

The Kinetic energy of gas molecules

A) is unaffected by temperature variations B) decreases with increase of temperature
C) increases with decrease of temperature D) increases with increase of temperature

Answer:   D) increases with increase of temperature



Explanation:

Kinetic Energy K.E = 12mV2  or 

K.E V2, Where 'm' is the mass and 'v' is the velocity of molecules.

 

Velocity is proportional to temperature. Hence, KE is proportional to temperature and would increase with temperature.

Subject: Chemistry
Exam Prep: AIEEE
Q:

In the thermite process, the reducing agent is

A) Chlorine B) Aluminium
C) Silicon D) Iron
 
Answer & Explanation Answer: B) Aluminium

Explanation:

In the thermite process, the reducing agent is Aluminium.

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Q:

In which of the following activities silicon carbide is used

A) Disinfecting water of ponds B) Making casts for statues
C) Making cement and glass D) Cutting very hard substances
 
Answer & Explanation Answer: D) Cutting very hard substances

Explanation:

In_which_of_the_following_activities_silicon_carbide_is_used1553082795.jpg image

Silicon carbide is used in Cutting very hard substances.

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0 153
Q:

Which is a compound that contains carbon?

A) Ethane B) Propane
C) Methane D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The compound methane is a simple hydrocarbon contains one carbon bonded to four hydrogens. Ethane is a simple hydrocarbon which contains two carbon atoms and four hydrogen atoms. Similarly, propane with three carbons.

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1 134
Q:

The main use of salt in the diet is to

the_main_use_of_salt_in_the_diet_is_to1552126680.jpg image

A) produce in small amounts the hydrochloric acid required for the digestion of food B) increase the solubility of food particles in water
C) make the taste of food better D) ease the process of cooking
 
Answer & Explanation Answer: A) produce in small amounts the hydrochloric acid required for the digestion of food

Explanation:

The main use of salt in the diet is to produce in small amounts the hydrochloric acid required for the digestion of food.

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2 269
Q:

The most electronegative element among the following is

A) Oxygen B) Chlorine
C) Nitrogen D) Sodium
 
Answer & Explanation Answer: A) Oxygen

Explanation:

Electronegativity measures an element's ability to form chemical bonds. Helium is the most electronegative element followed by Fluorine.

 

Here in the given options, Oxygen is the most electronegative element. Fluorine is followed by Oxygen, Chlorine and Nitrogen is the most electronegative elements list.

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1 202
Q:

Bullet proof material is made up of which polymer?

A) Poly carbonates B) Poly vinyl
C) Poly amides D) Polychloride
 
Answer & Explanation Answer: A) Poly carbonates

Explanation:

bullet_proof_material_is_made_up_of_which_polymer1551441450.jpg image

bullet proof material is made up of polymer Poly carbonates.

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1 226
Q:

The chemical name of common salt is

A) Sodium Chloride B) Potassium Nitrate
C) Sodium Nitrate D) Potassium Chloride
 
Answer & Explanation Answer: A) Sodium Chloride

Explanation:

The chemical name of common salt is Sodium Chloride with a chemical formula NaCl.

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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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