UPSC 2022: Weekly GK and Current Affairs Quiz Jan 01 – Jan 07
UPSC 2021: Weekly GK and Current Affairs Quiz Jan 01 – Jan 07 with Multiple Choice Questions and answers for... View Article
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What are the Three Major Problems Faced because of the Large Dams?
Answer: The three major problems faced due to large dams are as follows: Relocation of villagers and people living nearby.... View Article
The number of ATP molecules produced by ETS from Krebs intermediates after a single turn of the cycle is completed is
a) 11 b) 12 c) 15 d) 16 Answer: b) 12 Explanation: The electron transport system produces 12 molecules of... View Article
The name of plant written on herbarium sheet is its
a) English name b) Scientific name c) Local name d) All of the above Answer: b) Scientific name Explanation: A... View Article
Write three characteristics of the crops used both as food and fodder.
Maize is a kharif crop which is used as both food and fodder. It grows well in alluvial soil between... View Article
Key’ is a taxonomical aid used for the identification of organisms. Each statement in the key is called a
a) Couplet b) Lead c) Both a and b d) None of the above Answer: b) Lead Explanation: A taxonomic... View Article
In bryophyllum, the buds that arise from the notches of margins of leaves are called
a) Apical bud b) Axillary buds c) Terminal buds d) Adventitious buds Answer: d) Adventitious buds Explanation: The adventitious buds,... View Article
What is the difference between moist evergreen and dry evergreen forest?
Moist evergreen forests are found around the Western Ghats, Andaman and Nicobar islands and North-eastern regions. The trees are tall,... View Article
All of the following are eliminated by sebaceous glands through sebum except
a) Sterols b) Hydrocarbons c) Waxes d) Proteins Answer: d) Proteins Explanation: Sweat glands eliminate substances like NaCl, urea and... View Article
Which of the following statements is incorrect about golgi apparatus?
a) It helps in the recycling of the plasma membrane, pitched off by pinocytosis and phagocytosis. b) Secretion is the... View Article
Which of the following is a commercial product formed by a fungus named Trichoderma?
a) Lactic acid b) Cyclosporin A c) Penicillin d) Statins Answer: b) Cyclosporin A Explanation: Cyclosporin A is a natural... View Article
Is black soil easy to work, in a hot climate? Explain.
Black soil is made of extremely small and clayey particles. It is rich in calcium carbonate, magnesium carbonate, potash and... View Article
Digestion of protein is completed in which part of small intestine
a) Duodenum b) Ileum c) Duodenum and ileum d) Stomach Answer: b) Ileum Explanation: Protein absorption starts in the duodenum... View Article
If a diploid cell has 18 chromosomes, how many chromatids will it have at the bivalent stage?
a) 9 b) 36 c) 54 d) 18 Answer: b) 36 Explanation: At the bivalent stage, each chromosome has two... View Article
Cross between which pea plants is considered to be the test cross?
a) Two dominant plants b) Two recessive plants c) A dominant and a homozygous recessive plant d) A dominant and... View Article
Alveoli are the tiny sacs of air in the lungs whose average diameter is 5×10-5m. Consider an oxygen molecule (5.3×10-26kg) trapped within a sac. Calculate uncertainty in the velocity of oxygen molecules.
Uncertainty in the position Δx = 5×10-5 m ΔxΔv ≥ h4πm Δv ≥ 6.626 *10-34*4* 3.14* 5.3*10-26* 5*10-5 Δv≥ 1.99m/sec... View Article
Which of the following events increases when there is depolarisation of a nerve fibre?
a) A positive charge in the intercellular fluid and a negative charge outside b) A positive charge on both sides... View Article
Equipotential surfaces are shown in figure, then the electric field strength will be
Solution: \(\begin{array}{l}dV=\vec{-E}.\vec{dr}\end{array} \) \(\begin{array}{l}\Delta V={-E}.\Delta rcos\Theta\end{array} \) \(\begin{array}{l}E=\frac{-\Delta V}{\Delta rcos\Theta}\end{array} \) \(\begin{array}{l}E=\frac{-(-20-10)}{10*10^{-2}cos 120^{\circ}} = \frac{-10^{2}}{-\frac{1}{2}} = 200 V/m\end{array} \) Direction... View Article
An alternating voltage of 260 volt and ω =100 radian/second, is applied in an LCR series circuit where L=0.01 H, C=4×10^−4, F and R = 10Ω . The power supplied by the source is:
a) 6760 W b) 3380 W c) 1000 W d) 3000 W Solution:c) 1000 W Explanation: \(\begin{array}{l}X_{L}=\omega L X_{L}=100*\frac{1}{100}\end{array} \)... View Article
If the kinetic energy of a free electron doubles, its de Broglie wavelength changes by the factor
a) \(\begin{array}{l}\frac{1}{2}\end{array} \) b) 1 c) 2 d) \(\begin{array}{l}\frac{1}{\sqrt{2}}\end{array} \) Solution: d) \(\begin{array}{l}\frac{1}{\sqrt{2}}\end{array} \) Explanation: \(\begin{array}{l}\lambda = \frac{1}{\sqrt{2mE}}\end{array} \) \(\begin{array}{l}\lambda... View Article
