General Science - Online Test
Q1. Which of the following structure is Ectodermal in origin?
Answer : Option D
Explaination / Solution:
The ectoderm differentiates to form the nervous system (spine, peripheral nerves and brain), tooth enamel and the epidermis, the outer part of integument. It also forms the lining of mouth, anus, nostrils, sweat glands, hair and nails.
Q2. The organism that completely lack a cell wall and are smallest living cell known that can survive without oxygen is
Answer : Option A
Explaination / Solution:
Mycoplasma is a genus of bacteria that lack a cell wall around their cell membrane. Without a cell wall, they are unaffected by many common antibiotics such as penicillin or other beta-lactam antibiotics that target cell wall synthesis.
Mycoplasma species are the smallest bacterial cells yet discovered,can survive without oxygen, and come in various shapes. For example, M. genitalium is flask-shaped.
Q3. In Friedel-Crafts alkylation reaction, when benzene is treated with an alkyl halide in the presence of a catalyst, alkylbenene is formed. The catalyst used is
Answer : Option A
Explaination / Solution:
the acid chloride or anhydride reacts with anhydrous aluminium chloride to form the acylium ion which serves as an electrophile which then attacks the benzene ring to give alkylbenzene.
Q4. Monetary policy is the policy of
Answer : Option A
Explaination / Solution:
Monetary policy is the macroeconomic policy laid down by the central bank of the country.
Q5. Standard Gibbs energy change is related to the equilibrium constant of the reaction as follows:
Answer : Option D
Explaination / Solution:
= -RTln K
where is standard Gibbs energy change, K is equilibrium constant, R is universal gas constant and T is temperature in kelvin scale
Q6. A deficit in BOP occurs
Answer : Option B
Explaination / Solution:
Balance of payments includes all external visible and non-visible transactions of a country. If a country is importing more than it exports, its trade balance will be in deficit, but the shortfall will have to be counterbalanced in other ways – such as by funds earned from its foreign investments, by running down currency reserves or by receiving loans from other countries.
Q7. In case of open-ended classes, an appropriate measure of dispersion to be used is
Answer : Option A
Explaination / Solution:
As it is not much affected by extreme situations.
Q8. In the periodic table Electronegativity generally
Answer : Option D
Explaination / Solution:
The electronegativity value increases as the effective nuclear charge on the atomic nucleus increases. In a period moving from left to right, the electronegativity increases due to decrease in atomic radii resulting an increase in effective nuclear charge. Whereas, in a group moving from top to bottom, the electronegativity decreases because atomic radius increases due to subsequent addiiton of shells.
Q9. Which of the following are the indicators of health (i) Infant mortality (ii) Morbidity (iii) Life expectancy. Options are
Answer : Option A
Explaination / Solution:
People’s health by taking into account indicators like infant mortality, life expectancy.
Q10. Embryology is
Answer : Option B
Explaination / Solution:
Embryology is the branch of biological science in which we study about spore, fertilisation as well as formation of embryo. It is not just the formation of embryo from zygote.
