General Science - Online Test
Q1.
Read the following for hemodialysis :
i. Blood of patient is pumped from vein into cellophane tube which is suspended within dialysing solution.
ii. Dialysing solution is of the same composition as blood plasma but no urea.
iii. The risk of formation of blood clots is associated with artificial kidney.
iv. Blood is therefore mixed with anti-heparin to prevent clot formation.
Answer : Option B
Explaination / Solution:
During hemodialysis, blood from patient if pumped out from vein and passes through dialysis having dialyzing solution having same composition as blood plasma without urea. Anti heparin is added to blood to prevent clotting of blood.
Q2. A water heater is operated by solar power. If the solar collector has an area of 6.00 and the power delivered by sunlight is 550 W/ , how long does it take to increase the temperature of 1.00 of water from 20.0C to 60.0C?
Answer : Option D
Explaination / Solution:
Q3. Selective breeding of organisms (Animal husbandry and plant breeding programs) for specific desirable characteristics are examples of
Answer : Option C
Explaination / Solution:
In animal husbandry and plant breeding, specific desirable characteristics are obtained by selective breeding. The plants or animals having specific traits are crossed to obtain required traits. It is a kind of artificial selection.
Q4. A mixture of dihydrogen and dioxygen at one bar pressure contains 20% by weight of dihydrogen. Calculate the partial pressure of dihydrogen.
Answer : Option C
Explaination / Solution:
P=P1+P2 (Daltons Law of partial pressure).
Q5. The carbohydrate which cannot be hydrolysed in human digestive system is.
Answer : Option D
Explaination / Solution:
Cellulose which cannot be hydrolysed in human digestive system
Q6. Which of the following greenhouse gasses has the greatest heat-trapping ability per molecule?
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. “SystemaNaturae” is a book written by
Answer : Option A
Explaination / Solution:
‘SystemaNaturae’is a book written by Carolus Linneaus. This books gives in depth details of classification system and binomial nomenclature of organisms.
Q8. Upper surface of leaf is
Answer : Option C
Explaination / Solution:
Epidermal cells are present on both side of leaves. The lower side contain more stomata. The upper surface of leaf is called as adaxial epidermis.
Q9. The most commonly used compound as a source of ethylene
Answer : Option B
Explaination / Solution:
The most widely used compound as source of ethylene is ethephon. Ethephon in an aqueous solution is readily absorbed and transported within the plant and releases ethylene slowly.
Q10. Solution of hydrogen in palladium is an example of
Answer : Option A
Explaination / Solution:
Hydrogen (solute , gas ) and solvent is palladium (solid).
