General Science - Online Test
Q1. The enthalpy of combustion of methane, graphite and dihydrogen at 298 K are, - 890.3 kJ mol-1, -393.5 kJ mol-1 and –285.8 kJ mol-1 respectively. Enthalpy of formation of CH4 (g) will be
Answer : Option C
Explaination / Solution:
ΔH= -393.5 +2(-285.8)-(-890.3)
= -74.8 kJ/mo
Q2. The demand for foreign exchange and the exchange rate has
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Which of the following symbols represents the standard deviation of the population?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. Packing efficiency in body centered cubic structure is
Answer : Option B
Explaination / Solution:
Q5. General electronic configuration of s-block elements is:
Answer : Option C
Explaination / Solution:
The elements of Group 1 (alkali metals) and Group 2 (alkaline earth metals) which have ns1 and ns2 outermost electronic configuration belong to the s-Block Elements. The general electronic configuration of the valence shell for s-block elements is ns1-2.
Q6. Which of the following is related to six system of Indian medicine(AYUSH) (i) Ayurveda (ii) Samveda (iii) Yoga (iv) Unani (v) Naturopathy (vi) Homoeopathy. Options are
Answer : Option C
Explaination / Solution:
Indian Systems of Medicine (ISM): It includes six systems: Ayurveda, Yoga, Unani, Siddha, Naturopathy and Homeopathy (AYUSH).
Q7. Vulcanisation makes rubber
Answer : Option C
Explaination / Solution:
Vulcanization makes rubber more elastic and more stiff.
Q8. Epiblast present in certain monocot embryo represents
Answer : Option A
Explaination / Solution:
Embryo of certain monocotyledonous seeds contain additional cotyledon besides one present in al monocots. This cotyledon represents the evolutionary stage of cotyledon formation from one to two.
Q9.
At what temperature is the root mean square speed of an atom in an argon gas cylinder equal to the rms speed of a helium gas atom at – 20 ? (Atomic mass of Ar = 39.9 u, of He = 4.0 u).
Answer : Option C
Explaination / Solution:
vAr=vHe3RT39.9−−−−−√=3R×2534−−−−−−−−√T=39.9×2534=2.52×103K
Q10. Migration is an adaptation that should be categorised under
Answer : Option A
Explaination / Solution:
The organisms move away temporally from stressful habitat to more suitable habitat is called migration. Migration adaptation is a behavioral attribute.
