Sawaal
  • Home/
  • Searching for CH

 Searching for "CH"

Q:

At which place will you find maximum sunlight in December?

A) Kanya Kumari B) Pune
C) Kolkata D) Lek
 
Answer & Explanation Answer: A) Kanya Kumari

Explanation:

Kanyakumari is nearest to the Tropic of Capricorn, and the sun's rays fall vertically here during December.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

Q:

Which of the following mountains are the oldest according to geological history?

A) Nilgiris B) Satpura Range
C) Vindhyas D) Aravalli
 
Answer & Explanation Answer: D) Aravalli

Explanation:

According to geological history, the important mountains of india arranged in the order of age starting from the oldest are the Aravallis , the westerm Ghats, Vindhya and Satpura, the Nilgiris , and the Himalayas.

Report Error

View Answer Report Error Discuss

Filed Under: Indian Geography

Q:

Lamarck's theory of inheritance of acquired characters was challenged by 

A) August Weismann B) Hugo de Vries
C) Herbert Spencer D) Carl Linnaeus
 
Answer & Explanation Answer: C) Herbert Spencer

Explanation:

August Weismann cut off the tails of mice for 21 successive generations and still they produced generation after generation of only tailed young ones. So he concluded that acquired characters are not inherited.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

Q:

Damage to hearing is caused by sounds which exceed

A) 70 decibles B) 80 decibles
C) 100 decibles D) 120 decibles
 
Answer & Explanation Answer: D) 120 decibles

Explanation:

High frequency sound attacks the tympanic memberane and makes it defective. 120 decibles is too high a pitch to be heard and therefore it impairs the hearing ability.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

Q:

AIDS is caused by the organisms which are

A) bacteria B) fungi
C) viruses (HTLV III) D) ProtoZoa
 
Answer & Explanation Answer: C) viruses (HTLV III)

Explanation:

AIDS: The term means Acquired Immunity Deficiency Synodrome. The virus attacks the T cells of the (white corpuscle type) blood and destroys them.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

Q:

Biological control is to check growth of 

A) plants B) animals
C) weeds D) one pest by another
 
Answer & Explanation Answer: D) one pest by another

Explanation:

Biological Control: This method is very effective. One pest is destroyed by another organism. For example the aphids are killed by lady beetle. The prickly pear is eradicted by cochineal insect. Here the advantage is, one does not use harmful chemicals which may get into the host plants.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

Q:

In case of a heart attack, a hormone is injected as an emergency measure, Which one is it?

A) Thyroxine B) Adrenaline
C) Heparin D) Insulin
 
Answer & Explanation Answer: B) Adrenaline

Explanation:

Heparin is a hormone secreted by the liver. This is anticoagulant in its property. It prevents cloting of blood inside the heart and blood vessels. Heart attack is the result of a block in the blood vessels supplying blood to the walls of the heart.

Report Error

View Answer Report Error Discuss

Filed Under: Biology

Q:

Organisms which synthesise their own food are called

A) autotrophs B) heterotrophs
C) auxotrophs D) saprotrophs
 
Answer & Explanation Answer: A) autotrophs

Explanation:

Autotroph: This term means organisms that synthesise their own food. Troph means feeding. Auto means self. The green plants which synthesise their own food are called autotrophs. All others which depend upon the plants directly or indirectly are called heterotrophs.

Report Error

View Answer Report Error Discuss

Filed Under: Biology