General Science - Online Test
Q1. Urea cycle operates in :
Answer : Option A
Explaination / Solution:
Urea cycles operates in liver, where ammonia is converted into urea. Sometimes urea cycle also occurs in kidney.
Q2. A steam engine delivers 5.4 J of work per minute and services of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per minute?
Answer : Option C
Explaination / Solution:
Heat Wasted =
Q3. Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
Answer : Option D
Explaination / Solution:
Primitive earth was devoid of oxygen so, only those organisms that were able to survive within anaerobic conditions developed. All these were heterotrophic organisms (taking nutrients from outside). Then after autotrophic organisms were developed that used inorganic sources such as H2S,NH3,CH4 as the principle sources of energy. These oganisms are called chemo-autotrophs.
Q4. 34.05 mL of phosphorus vapour weighs 0.0625 g at 546 and 0.1 bar pressure. What is the molar mass of phosphorus?
Answer : Option B
Explaination / Solution:
PV=(0.0625/M)RT where p=0.1bar T=819.15K and V= 34.05ml
Q5. The enzyme which catalyses the hydrolysis of fats into fatty acids and glycerol is.
Answer : Option C
Explaination / Solution:
Lipase catalyse hydrolysis of fats into fatty acids and glycerol.
Q6. A countrys current population is 100 million with an annual growth rate of 3.5%. If the growth rate remains constant, what will be the population in 40 years?
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. In arborescent monocots stem, a secondary cambium grows in the following type of vascular bundle is seen in
Answer : Option B
Explaination / Solution:
It is the anatomy of monocotyledonous root.
Q8. In which of the following solvents is silver chloride most soluble?
Answer : Option A
Explaination / Solution:
AgCl is soluble in ammonia due to the formation of complex
Q9. A difference of 2.3 eV separates two energy levels in an atom. What is the frequency of radiation emitted when the atom make a transition from the upper level to the lower level?
Answer : Option C
Explaination / Solution:
No Explaination.
Q10. The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of the electron in this state?
Answer : Option C
Explaination / Solution:
No Explaination.
