General Science - Online Test
Q1. Exarch xylem is present in
Answer : Option C
Explaination / Solution:
The xylem in which protoxylemis outside and metaxylem is inside is called exarch xylem. This kind of xylem is found in roots of dicots.
Q2. Which pair of enzyme promotes femaleness in flowers?
Answer : Option D
Explaination / Solution:
Flower Sex Conversions :
- Gibberellins (GA3) promote maleness
- Ethylene and auxins promote femaleness
Q3. The depression in freezing point for 1M urea, 1 M glucose and 1 M NaCl are in the ratio of
Answer : Option C
Explaination / Solution:
NaCl has i=2 while urea and glucose will have i=1
Q4. Foreign spending on domestic goods and services is ____ and domestic spending on foreign goods is ______
Answer : Option D
Explaination / Solution:
Exports refers to a product or service sold abroad. Imports refers to bring (goods or services) into a country from abroad for sale.
Q5. We can save those water reservoirs which are useful for irrigation, by
Answer : Option B
Explaination / Solution:
We can save water reservoirs which are useful for irrigation by checking biotic succession. Biotic succession leads to silt formation at bottom that reduce the capacity of water reservoirs.
Q6. An Unbalanced budget is one where
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. If the mean of five observations x, x + 2, x + 4, x + 6, x + 8 is 11. Find the mean of 1st three observations
Answer : Option B
Explaination / Solution:
Mean is calculated as the sum of the values of all observations divided by the number of observations
N= 3
Sum of the values of 1st. three observations = 11+9+7= 27
Mean = 27/3 = 9
N= 3
Sum of the values of 1st. three observations = 11+9+7= 27
Mean = 27/3 = 9
Q8. Unemployment arises due to inadequate aggregate demand associated with downswing, recession or depression of trade cycle
Answer : Option C
Explaination / Solution:
Cyclical unemployment is when workers lose their jobs because of downturns in the business cycle. You can tell when the economy contracts by measuring gross domestic product. If the economy contracts for two quarters or more, it's in a recession.
Q9.
Two billiard balls each of mass 0.05 kg moving in opposite directions with speed 6 m collide and rebound with the same speed. What is the impulse imparted to each ball due to the other?
Answer : Option D
Explaination / Solution:
Impulse imparted to one ball by the other = change in momentum
= momentum after collision - momentum before collision
= {0.05 x 6} - {0.05x(-6)}
= 0.6 kg m s-1
Q10. Radioactive probe can be detected by
Answer : Option A
Explaination / Solution:
Radioactive probes are single stranded DNA or RNA having radioactive components. This probe can be detected in the individual by using autoradiography technique.
