Gen Science And Technology Take Me home 12345678910111213141516171819202122232425262728293031 Gen Science Quiz 1 Bio Questions 30 1 / 31 All the following are invertebrates except fish prawn snail crab 2 / 31 A food chain consists of a decomposer only consumer only producer only producer and a consumer 3 / 31 13. A healthy freshwater fish is placed in salt- water. The expected consequence of this would be that there is no observable effect on the fish provided there is sufficient food the fish suffers from a fungal or bac- terial disease and dies the fish becomes dehydrated and dies the fish becomes bloated and dies 4 / 31 Crows and pigeons are neither (a) nor (b) both (a) and (b) warm-blooded cold-blooded 5 / 31 Deficiency of iron in human diet causes rickets scurvy anaemia goitre 6 / 31 Ductless glands are known as alveolar glands exocrine glands endocrine glands tubular glands 7 / 31 Manufacturing food by the process of photosynthesis in plants is an example of anabolism catabolism both anabolism and catabolism neither anabolism nor catabolism 8 / 31 A balanced diet contains animal protein food nutrients for growth and main- tenance macro and micronutrients butter and ghee 9 / 31 Main substance involved in transfer of electrons in photosynthesis is phytochrome cytochrome FAD both (a) and (b) 10 / 31 Lungs are situated in the abdominal cavity pericardial cavity thoracic cavity buccal cavity 11 / 31 A highly evolved human brain contains approximately 10,000 million nerve cells 100 million nerve cells 100,000 nerve cells 10,000 nerve cells 12 / 31 Heightened emotion is caused by the adrenal glands pituitary glands thyroid glands salivary glands 13 / 31 A woman receives her X-chromosome from either her mother or her father her mother only her father only both her mother and father 14 / 31 A doctor advises a patient to take plenty of citrus fruits, guavas, tomatoes and amalas over a period of 2 months regu- larly. What do you think the patient is suffering from? softness and pain in bones, bending of vertebral column spongy, swollen and bleeding gums blurred vision, burning and dryness of eye and tongue, cracking of skin at the corner of the mouth extreme weakness, swelling and pain in legs, loss of appetite, headache 15 / 31 Cancer is also shown to be enhanced by certain viruses hereditary predisposition all the above components of the human diet 16 / 31 Dialysis is used for the treatment of heart weakness kidney failure brain disease none of these 17 / 31 Banana fruit contains mainly fat starch glucose proteins 18 / 31 Most fish do not sink in water because of the presence of the (i) swim bladder (ii) air bladder (iii) air sacs (iv) air in spongy bones i, ii, iii and iv are correct iii and iv are correct i and ii are correct ii and iii are correct 19 / 31 A person having which of the following blood groups can receive blood of any group? AB A B O 20 / 31 A 'biological death' occurs/takes place when pupils are fixed and dilated all the body cells die after a few hours of clinical death there is no pulse and heart beat pupils show no reaction to light 21 / 31 Human urine as compared to human blood is hypertonic all of these hypotonic hypertonic 22 / 31 Bacteria do not need sunlight to grow because they use other kinds of light for their food synthesis they lack chlorophyll and so they are incapable of making their own food they prepare their food without the help of sunlight they hate sunlight 23 / 31 Lungs are enclosed in pericardium pleural membrane none of these peritoneum 24 / 31 Who is known as the "Father of Microbiology"? Jonas Salk Robert Koch Louis Pasteur Antonie Van Leeuwenhoek 25 / 31 What happens during seed germination? heat is liberated starch is synthesized light is absorbed starch is synthesized 26 / 31 Adenosine Triphosphate (ATP) is a molecule with high energy bonds a an enzyme a protein a hormone 27 / 31 A mature living cell without a nucleus is a sieve tube vessel companion cell sieve cell sieve cell 28 / 31 Food is normally digested in the large intestines small intestines stomach liver 29 / 31 Cotton fibres are made of fats protein cellulose Lipids 30 / 31 Gene is all of the above a segment of DNA and histone a segment of DNA, RNA and histone a segment of DNA or functional RNA 31 / 31 Mumps is a disease caused by none of these bacterium virus fungus Your score is 0% Send feedback 123456789101112131415161718192021222324252627282930 Gen Science Quiz 2 Questions 30 1 / 30 Which of the following is not a chemical action? digestion of food burning of paper conversion of water into steam burning of coal 2 / 30 Holes in a semiconductor though they have no mass no charge negative charge positive charge 3 / 30 Which of the following is the hardest element? copper diamond silicon iron 4 / 30 Body proteins' function is to catalyse biological reactions as en- zymes all the above build connective tissue and cartilage transport oxygen in blood and muscles 5 / 30 Which of the following is not a compound of calcium? chalk molybdenum marble gypsum 6 / 30 Chromosomes are constituent of blood, which produces heat in the body none of the above parts of the human brain thread-like bodies that occur in the nuclei and carry the genetic code 7 / 30 Enamel is a hardened transparent coating of paint none of the above a glossy coating fused to the surface of a metal, glass, or pottery a kind of clay mixed with pigments 8 / 30 Effect of light on photocells produces current photosynthesis none of these energy 9 / 30 During rusting iron gains weight the weight of iron remains unchanged iron loses weight iron volatilizes 10 / 30 Diamond is the form of carbon that is chemical crystalline amorphous alkaline 11 / 30 Distillation at reduced pressure is used for liquids which have high volatility have high boiling points have low boiling points decompose before their boiling points 12 / 30 Bond present between two carbohydrate molecule is hydrogen bond amide Glycosidic phosphodiester 13 / 30 Enzymes are sensitive to all three pH poisons heat 14 / 30 If a bomb is released from a plane moving with uniform velocity, then by the time the bomb reaches the ground, the plane will be vertically above the bomb ahead or behind, depending on its velocity ahead of the bomb behind the bomb 15 / 30 Elements that show the properties of both metals and non-metals are called metalloids alloys allotropes colloids 16 / 30 Cotton fibres are made of protein Lipids fats cellulose 17 / 30 Enzymes are fatty acids proteins carbohydrates nucleic acids 18 / 30 Energy is not carried by transverse progressive waves electromagnetic waves stationary waves longitudinal progressive waves 19 / 30 Crows and pigeons are cold-blooded neither (a) nor (b) both (a) and (b) warm-blooded 20 / 30 Bones are mainly made up of calcium and phosphorus calcium and sulphur calcium and iron calcium and magnesium 21 / 30 Which tissue is responsible for the passage of water in plants? phloem xylem sclerenchyma collenchynatous cells 22 / 30 Cancer is also shown to be enhanced by certain viruses hereditary predisposition components of the human diet all the above 23 / 30 Enthalpy of a compound is equal to heat of sublimation heat of formation heat of combustion heat of reaction 24 / 30 If a machine is lubricated with oil, then: mechanical efficiency of machine increases both its mechanical advantages and mechanical efficiency increase the mechanical advantage of the ma- chine increases its efficiency increases but its me- chanical advantages decreases 25 / 30 Wisdom teeth normally grow between the age of 34-40 17-25 45-55 10-17 26 / 30 Electromagnetic radiation is emitted by ultrasonic electrons protons X-ray 27 / 30 Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After sometime, the coffee will be found coldest in the tumbler painted rough white rough black shining black shining white 28 / 30 Fish plates are used in railway tracks to keep the rails equidistant to avoid tracks being distorted due to temperature fluctuation to connect two rails to control the speed of the train 29 / 30 Manufacturing food by the process of photosynthesis in plants is an example of both anabolism and catabolism catabolism anabolism neither anabolism nor catabolism 30 / 30 Gravitational constant (G) is an example of non-dimensional constant dimensional constant numeric constant quantity without dimensions Your score is 0% Send feedback 123456789101112131415161718192021222324252627282930 Gen Science Quiz 3 Questions 30 1 / 30 Cosmic rays can be charged as well as uncharged are uncharged particles are charged particles none of these 2 / 30 Ductless glands are known as tubular glands endocrine glands alveolar glands exocrine glands 3 / 30 Corrosion of a metal occurs at the none of the above both anode and cathode anode cathode 4 / 30 Coating of iron with zinc is known as electroplating none of these galvanization ionization 5 / 30 Denaturation of a protein is caused by heat high salt concentration all of the above acid 6 / 30 Colloids are purified by coagulation peptization condensation dialysis 7 / 30 Diamond is harder than graphite because of the difference of layers of atoms difference of layers of atoms tetrahedral structure of diamond difference in their structures 8 / 30 Conversion of a substance directly from solid to vapour state is known as sublimation ionization vaporization decomposition 9 / 30 Clouds float in the atmosphere because of their low pressure speed temperature density 10 / 30 Choose the only vector quantity from the following: density energy length torque 11 / 30 Covalent bonds are mainly found in organic compounds none of the above inorganic compounds electrolytes 12 / 30 During elections, a permanent chemi- cal mark is put at the base of the nail of the index finger while exercising your franchise. This mark is not seen after 2 months or so because (c) the formation of new nail forcibly removes the old one constant contact of the hands with hard water corrodes the mark it is gradually oxidized by tannin and caffeine that we ingest in tea and cof- fee respectively it is worn out by constant washing with scap and water 13 / 30 Cloudy nights are warmer because of the compact density of air of low atmospheric pressure clouds prevent radiation of heat from the ground into the air more dust particles gather in the air 14 / 30 A camel adapts easily in a desert due to water cells in stomach to store meta bolic water pads beneath two digits and hair growth near eyes and nostrils RBC's are nucleated RBC's are nucleated hump with stored food as fats 15 / 30 Deforestation has an alarming effect on sunlight soil erosion weed control increase in grazing area 16 / 30 Disease caused by deficiency of vitamin-C is beriberi night blindness pellagra scurvy 17 / 30 Deforestation has caused floods and drought loss of precious wildlife all the above intensified soil erosion 18 / 30 Which of the following is widely used as an anaesthetic? ammonia chlorine chloroform methane 19 / 30 Colloids contain only water soluble substances are suspensions of one phase in another are two-phase systems are true solutions 20 / 30 Core of transformer is made up of iron soft iron steel alnico 21 / 30 Choose the only scalar quantity from the following: energy torque force momentum 22 / 30 Dialysis is used for the treatment of kidney failure heart weakness none of these brain disease 23 / 30 Cud-chewing animals are known as cannibals. frugivores sanguivores ruminant 24 / 30 Cooking oil can be converted into vegetable ghee by the process of crystallization hydrogenation distillation oxidation 25 / 30 Cooking is quicker in a pressure cooker because increased pressure raises boiling point steam is not wasted water boils at lower temperature steam cooks food faster 26 / 30 Containers for carrying strong acids are made of platinum lead brass copper 27 / 30 Delicious chilgoza seeds, commercially important products such as turpentine and resin and the drug ephedrine, useful in asthma and other respiratory ailments. are all obtained from plants that are monocotyledons and dicotyledons gymnosperms ferns algae 28 / 30 Deficiency of iron in human diet causes rickets scurvy anaemia goitre 29 / 30 Copper is a ferromagnetic substance paramagnetic substance diamagnetic substance dielectric 30 / 30 Cholesterol is a fatty alcohol found in animal fats derivative of chloroform type of chlorophyll chromium salt Your score is 0% Send feedback 123456789101112131415161718192021222324252627282930 Gen Science Quiz 4 Questions 30 1 / 30 By what process is heat transmitted from the filament of an evacuated electric bulb to the glass? conduction heat cannot be transmitted through a vacuum radiation convection 2 / 30 What happens during seed germination? light is absorbed starch is synthesized heat is liberated starch is synthesized 3 / 30 An ice block contains a glass ball when the ice melts within the water containing vessel, the level of water first rises and then falls falls rises unchanged 4 / 30 Atmospheric pressure is measured by using an instrument called a/an manometer hydrometer altimeter 5 / 30 An element found in all organic com- pounds is calcium carbon nitrogen None Of the these 6 / 30 Carbon occurs in nature in the purest form as diamond carbon black coal graphite 7 / 30 Fertilization in frogs is internal external both external and internal both external and internal 8 / 30 Blue of the sky is due to the reflection of white light by the earth scattering of white light by molecules of air refraction of white light by the atmo- sphere interference of white light 9 / 30 Cathode rays were discovered by Rutherford J. J. Thomson Dirac Lord Kelvin 10 / 30 Chlorine is not used in the preparation of phosgene hydrochloric acid bleaching powder phosphine 11 / 30 Atomic number of an element gives the total number of elementary particles in its atom the weight of the atom of the element the number of protons in its atom the number of protons in its atom 12 / 30 From which part of the plant is turmeric obtained? root fruit stem seed 13 / 30 Carcinogenic chemicals are those that can cause cancer allergy carbon none of these 14 / 30 Fungi are always parasitic autotrophic heterotrophic Saprophytic 15 / 30 Edible part of cauliflower is mesocarp and pericarp style and stigma mesocarp, endocarp endocarp and mesocarp 16 / 30 As the train starts moving, a man sitting inside leans backwards because of inertia of rest inertia of motion conservation of mass moment of inertia 17 / 30 ECG is used for the diagnosis of ailments of the heart lungs kidneys brain 18 / 30 An element with atomic number 36 belongs to the f-block d-block p-block s-block 19 / 30 appears to be the brightest at night? Venus Mercury Jupiter Mars 20 / 30 Aluminium is extracted from bauxite by reduction with CO by reduction with Mg by reduction with carbon by electrolysis in molten cryolite 21 / 30 At high altitudes it is difficult to cook eggs or vegetables properly because of high atmospheric pressure and low boiling point of water high boiling point of water and low atmospheric pressure low boiling point of water and low atmospheric pressure low value of acceleration due to gravity 22 / 30 Food is normally digested in the stomach small intestines large intestines liver 23 / 30 Fruiting body of mushrooms is present in Like monocotyledon seeds Fungi Algae Like dicotyledon seed 24 / 30 An element that can form a pentoxide is phosphorus boron aluminium nitrogen 25 / 30 Amino acids are the building blocks vitamins lipids proteins starch 26 / 30 An iron hammer lying in the sun appears much hotter than its wooden handle because iron is a good conductor of heat iron absorbs more heat iron is at a higher temperature iron is darker than wood 27 / 30 An object moving around in a circle is moving with a uniform speed variable velocity` variable speed uniform velocity 28 / 30 Chemically, an enzyme is a carbohydrate lipid protein Vitamin 29 / 30 During the day time plants take in carbon dioxide and give out oxygen take in nitrogen and give out oxygen take in oxygen and give out carbon dioxide take in nitrogen and give out oxygen 30 / 30 Enzymes help in respiration digestion of food reproduction immune system respiration Your score is 0% Send feedback
