General Science - Online Test
Q1. Point out a demerit of fixed exchange rate
Answer : Option B
Explaination / Solution:
yes it contradicts with the objectives of free markets .It can be explained as
suppose,
· If a currency is falling below its band the government will have to intervene. It can do this by buying sterling but this is only a short term measure.
· The most effective way to increase the value of a currency is to raise interest rates. This will increase hot money flows and also reduce inflationary pressures.
· However higher interest rates will cause lower AD and economic growth, if the economy is growing slowly this may cause a recession and rising unemployment
Q2. If mean and coefficient of variation of a set of data is 10 and 5, then S.D. is
Answer : Option D
Explaination / Solution:
No Explaination.
Q3. Iodine is liberated from KI solution when treated with
Answer : Option D
Explaination / Solution:
Cu_2+ will reduce to Cu + and I- will oxidize to I2.
Q4. Which of the following is false regarding non-commercial source of energy
Answer : Option D
Explaination / Solution:
Coal, petroleum products, natural gas and, electricity are the important components of commercial energy.
Q5. In diffusion, the movement of molecule across typical plant cell takes about
Answer : Option D
Explaination / Solution:
Long distance transport of substances within a plant cannot be by diffusion alone. Diffusion is a slow process. It can account for only short distance movement of molecules. For example, the movement of a molecule across a typical plant cell (about 50 μm) takes approximately 2.5 s.
Q6. The seeds dispersed by wind must not be
Answer : Option D
Explaination / Solution:
Dispersal of seed is necessary for proper growth of seed. The seeds located close to each other may have struggle for existence. The wind dispersed must be light, minute and winged so that it can be carried by wind easily. Sticky seeds remain attached with each other.
Q7. What is the root-mean-square speed of helium atoms in a balloon of diameter 30.0 cm at 20.0C and 1.00 atm?
Answer : Option B
Explaination / Solution:
vrms=3RTM−−−−√=3×8.31×2934×10−3−−−−−−−−√=1351m/sec=1.35Km/sec
Q8. Frenkel defects are not found in alkali metal halides because
Answer : Option C
Explaination / Solution:
Alkali metals have frenkel defect because of there large size.
Q9. Among hydrophytes which of the following xylem component remains absent?
Answer : Option D
Explaination / Solution:
Xylem vessels are responsible of water transportation in plants. Hydrophytes grows in plants therefore there is no requirement of special water transporting tissues in hydrophytes.4
Q10. Hexamethylenediamine with adipic acid to manufacture Nylon 6, 6 needs the following conditions to proceed.
Answer : Option A
Explaination / Solution:
Formation of Nylon 6,6 is done at high Pressure and high temperature.
