General Science - Online Test
Q1. Health means
Answer : Option B
Explaination / Solution:
"A state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity." The state of being free from illness or injury.
Q2. If an endosperm cell of angiosperm contain 24 chromosome, the number of chromosome in each cell of root is
Answer : Option C
Explaination / Solution:
Endosperm cells are triploid as they are formed by triple fission of two polar nuclei and one male gamete. So, haploid cell will contain 8 chromosomes only. Root cells are diploid. Hence root cell will contain 16 chromosomes.
Q3.
Estimate the total number of air molecules (inclusive of oxygen, nitrogen, water vapor and other constituents) in a room of capacity 25.0 at a temperature of 27 C and 1 atm pressure.
Answer : Option D
Explaination / Solution:
PV=NkTN=PVkT=1.01×105×251.38×10−23×300=6.1×1026
Q4. An example of predation is
Answer : Option C
Explaination / Solution:
Biological control method adopted in agricultural pest control are based on the ability of predator to regulate prey population.
Q5. Analysis of xylem sap shows
Answer : Option A
Explaination / Solution:
Mineral salts are translocated through xylem along with the ascending stream of water, which is pulled up through the plant by transpirational pull.
Q6. Active form of Which enzyme hydrolyses milk protein in stomach?
Answer : Option B
Explaination / Solution:
Rennin is a proteolytic enzyme found in gastric juice of infants which helps in the digestion of milk proteins.
Q7. The study of general price level is a macroeconomic study. This statement is
Answer : Option D
Explaination / Solution:
Macro economics is concerned with variables as the aggregate volume of output of an economy, with extent to which resources are employed, with the size of national income and with general price level.
Q8. A Plano convex lens of curvature of 30 cm & R.I. 1.5, produces a real image of an object kept 90cm from it. The magnification is
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. AIDS can be transmitted by
Answer : Option C
Explaination / Solution:
AIDS can be transmitted from infected person to healthy person through blood transfusion. The most common way of transmission of AIDS is during sexual intercourse with multiple partners without protection.
Q10. Supersonic planes cause;
Answer : Option A
Explaination / Solution:
No Explaination.
