Practice Pakistan's most useful MCQs for competitive exams

Virus is__________?

• (A)  unicellular
• (B)  multicellular
• (C)  acellular
• (D)  none of these

Answer

Submitted By :Ali Uppal

__________is a condition in which there is an absence of oxygen supply to an organ’s tissues?

• (A)  Anoxia
• (B)  Anorexia
• (C)  Hypoxia
• (D)  Enuresis

Answer

Submitted By :Ali Uppal

Study of interaction of living organisms with other organisms and their environment relates with ___________ ?

• (A)   Botany
• (B)  Ecology
• (C)  Social biology
• (D)  Pharmacology

Answer

Submitted By :Ali Uppal

Dorsal root of spinal nerves contain only __________ ?

• (A)   Effectors neurons
• (B)  Receptor neurons
• (C)  Stimulators
• (D)  Detector neurons

Answer

Submitted By :Ali Uppal

The higher animals have special organs for exchange of gases as their skin is ___________ ?

• (A)  Thin
• (B)  Thick
• (C)  Soft
• (D)  Hard

Answer

Submitted By :Ali Uppal

Oxygen is the production of____________?

• (A)  Mitochonderia
• (B)  Chloroplast
• (C)  Peroxisomes
• (D)  Both A & B

Answer

Submitted By :Ali Uppal

Which one of the following has the maximum number of isotopes ?

• (A)  oxygen
• (B)  carbon
• (C)  tin
• (D)  chlorine

Answer

Submitted By :Ali Uppal

moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?

• (A)  0.18 mole
• (B)  0.27 mole
• (C)  0.24 mole
• (D)  0.09 mole

Answer

Submitted By :Ali Uppal

Which of the following terms is not used for ionic compound ?

• (A)  formula unit
• (B)  empirical formula
• (C)  molecular formula
• (D)  formula mass

Answer

Submitted By :Ali Uppal

The number of isotopes of elements with even mass number and even atomic number are ________________?

• (A)  280
• (B)  300
• (C)  154
• (D)  54

Answer

Submitted By :Ali Uppal