Railway Board offers opulent and revered job posts to its aspirants. And it is not every year that we get the notification from Railway offering a good number of vacant seats to the multitude aspirants. But the current year 2018 brought a pleasant surprise with almost 1,27,278 seats to be filled by the valid candidates. Opportunity is here but you have to welcome it with a provident strategy.
(a) Collects the coins
(b) Collects stamps
(c) Collects the pictures of birds
(d) Collects the feathers
Sol. Philatelist collects postage stamps.
Q2. Potato is a :
Sol. Potatoes grow underground, but the part we eat is not a root. It is an underground stem called a tuber.
Q3. Desert plants have longer root system because:
(a) High temperature of the soil stimulates the growth of roots
(b) Roots grow in search of water
(c) Soil does not contain water, hence becomes compact and presses the roots to grow longer
(d) Roots moves opposite to the solar heat
Sol. Cactus, calotropis, aloe, etc. are desert plants . The root system of these plants become taller in search of water from the soil and their stems are small, adapted and underground sometimes.
Q4. Genome mapping relates to:
(a) Blood grouping
(b) Mapping of genes
(c) Mapping of nerve centers
(d) Mapping of brain
Sol. Gene mapping is the method used for determining the location of gene and relative distances between genes on a chromosome.
Q5 Amphibia are-
(a) Very fastly moving boats
(b) Animals living in water only
(c) Animals living on land only
(d) Animals living equally in water and on land both
Sol. The word “amphibian” is derived from the ancient Greek term amphibious, which means “both kinds of life”. The term was initially used as a general adjective for animals that could live on land or in water. They are ectotherms or cold-blooded animals, means they are unable to regulate their own body temperature.
Q6. The major chemical compound found in human kidney stones is :
(b) Calcium carbonate
(c) Calcium oxalate
(d) Calcium sulphate
Sol. Calcium Oxalate is a chemical compound that forms envelope shaped crystals, known in plants as raphides. A major constituent of human kidney stones is calcium oxalate.
Sol. Photosynthesis takes place primarily in leaves and partially in stems. It takes place within specialized cell structures called chloroplasts. Photosynthesis takes place in the chloroplasts that have chlorophyll present in them. It is the chlorophyll that absorbs light energy from the sun. There are tiny pores called stomata that function as roadways for carbon dioxide to enter and oxygen to leave the plant.
(a) Robert Hooke
(b) Antonie van Leeuwenhoek
(c) Carl Linnaeus
(d) Charles Darwin
Sol. Anton van Leeuwenhoek (1632 – 1723) was a Dutch tradesman and scientist, best known for his work on the development and improvement of the microscope and also for his subsequent contribution towards the study of microbiology so he is called as father of microbiology.
(b) Protein Synthesis
Sol. The main function of RNA is to carry information of amino acid sequence from the genes to where proteins are assembled on ribosomes in the cytoplasm. This is done by messenger RNA (mRNA). In other words, primary function of RNA is protein synthesis.
(c) Active Transport
(d) Passive Transport
Sol. Active transport is the movement of dissolved solutes across a membrane against a concentration gradient (moving from low to high concentration). This process requires a carrier protein, and energy in the form of ATP is required.
Sol. Study of classification of organisms is known Taxonomy.
Sol. Metformin is an oral antidiabetic drug for the treatment of diabetes.
Q13. The normal temperature of the human body is-
(a) 37 °C
(b) 98 °C
(c) 367 K
(d) None of the above
Sol. The average of normal temperature of human body is 98.4°F (37°C).
(a) Magnetic Resonance Index
(b) Magnetic Resolution Information
(c) Magnetic Resonance Imaging
(d) All the above
Sol. Magnetic resonance imaging (MRI) is a test that uses magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body.
(a) Contaminated grains
(b) Rotting vegetables
(c) Contaminated water
(d) Safe cooked food
Sol. Ergotism is a disease caused by consumption of contaminated grains. It is the effect of long-term ergot poisoning, traditionally due to the ingestion of the alkaloids produced by the Claviceps purpurea fungus that infects rye and other cereals.
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