General Science - Online Test
Q1. Ozone can be:
i. good ozone present in troposphere, and acts as shield against ultraviolet rays
ii. bad ozone is a severe pollutant in stratosphere and is dangerous to living beings.
i. good ozone present in troposphere, and acts as shield against ultraviolet rays
ii. bad ozone is a severe pollutant in stratosphere and is dangerous to living beings.
Answer : Option A
Explaination / Solution:
Ozone occurs in two layers of the atmosphere. The layer closest to the Earth's surface is the troposphere. Here, ground-level or "bad" ozone is an air pollutant that is harmful to breathe and it damages crops, trees and other vegetation. It is a main ingredient of urban smog.
The troposphere generally extends to a level about 6 miles up, where it meets the second layer, the stratosphere. The stratosphere or "good" ozone layer extends upward from about 6 to 30 miles and protects life on Earth from the sun's harmful ultraviolet (UV) rays.
Q2. Liver when chronically exposed to chloroform gets damaged because
Answer : Option A
Explaination / Solution:
CHCl3 oxidises to form COCl2 which is a poison.
Q3. Krebs cycle is both catabolic and anabolic because it provides
Answer : Option B
Explaination / Solution:
Kreb’s cycle is both catabolic and anabolic because it provides a number of intermediates which are product of catabolism as well as anabolism.
Q4. The function of NIC is
Answer : Option B
Explaination / Solution:
No Explaination.
Q5. If a potential of volts is applied across the electrodes of a CRT, then speed attained by the electrons is approximately (given: 1.76 C/kg)
Answer : Option A
Explaination / Solution:
No Explaination.
Q6. Calcium oxide is prepared on a commercial scale by using
Answer : Option C
Explaination / Solution:
Lime stone and rotary kiln is used in prepation of CaO.
Q7. A transmitting antenna at the top of a tower has a height 32 m and the height of the receiving antenna is 50 m. What is the maximum distance between them for satisfactory communication in LOS mode? Given radius of earth is 6.4 m.
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. In general, in the molecules containing multiple bonds,_____ provide the most reactive centres. Choose the most appropriate one.
Answer : Option A
Explaination / Solution:
pie bonds are the most reactive centers.
Q9. If MPC =0.75, then MPS will be
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. ________ was developed by the British Raj as a means to enlarge the size of market for the British goods
Answer : Option C
Explaination / Solution:
This huge railway network altered India’s transport system. As a result, transport costs were greatly reduced thereby to enlarge the size of market for the British goods.
