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A સીસ્મોગ્રાફ is a device used to measure earthquakes or seismic waves. It is designed to detect and record the vibrations caused by seismic activity. This makes it the correct tool for measuring earthquakes. Thermo graph measures temperature, cardiograph measures heart activity, and encephalograph measures brain activity.

The correct answer is "ગુરુત્વાકર્ષણ" which translates to "gravity" in English. Gravity is the force that pulls objects towards each other. In this context, it refers to the force that pulls substances towards the Earth's surface.

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આ પ્રશ્નમાં પુછવામાં આવેલ છે કે કોનું માપન ડેસિબલમાં કરવામાં આવે છે. ધ્વની એ એક માપન છે જે વિભ્રાંતિકર ધ્વનિની સામર્થ્યને દર્શાવે છે. ડેસિબલ એક ધ્વનિનો માપનમાં વપરાતો માપન પદકર છે. તેથી અહીં ધ્વની એ સાચો જવાબ છે.

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The correct answer is "ટંગસ્ટન". Tungsten is used to make the filament in an electric bulb because it has a high melting point and does not easily evaporate. This allows the filament to become hot and produce light without burning out quickly. Tungsten is also a good conductor of electricity, making it suitable for use in electric bulbs.

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Alfred Nobel is associated with dynamite. He was a Swedish chemist, engineer, and inventor who invented dynamite in 1867. Dynamite is an explosive material that revolutionized the construction and mining industries. Nobel's invention of dynamite brought him great wealth and success, but he later became concerned about its destructive potential. This led him to establish the Nobel Prizes in his will, including the Nobel Peace Prize, in order to promote peace and recognize contributions to humanity in various fields.

કાર્બન મોનોક્સાઈડ સૌથી ઝેરી વાયુ છે કારણ કે તે જીવન સાથે સંપર્ક કરેલા પદાર્થોને જીવનશેલ બનાવી શકે છે. આ વાયુ મોટાભાગે વનસ્પતિઓ દ્વારા પ્રસરિત થાય છે અને તેનો વપરાશ હવામાં કાર્બન ધારણ કરેલા જીવનશેલો દ્વારા થાય છે. આપણે પણ કાર્બન મોનોક્સાઈડ સાથે સંપર્ક કરીને અસ્વસ્થ થઈ શકીએ તેથી તે ઝેરી વાયુ છે.

The correct answer is "ક્ષય" (Tuberculosis). Tuberculosis is a disease caused by the bacteria Mycobacterium tuberculosis, which primarily affects the lungs but can also affect other parts of the body. Vaccination against tuberculosis is provided by the BCG (Bacillus Calmette-Guérin) vaccine, which helps in providing protection against the disease.

A viscometer is an instrument used to measure the viscosity or thickness of a fluid. It is commonly used in various industries such as automotive, pharmaceutical, and food processing to determine the flow properties of liquids. The other options mentioned in the question, such as vehicle speed, air pressure, and light intensity, are not related to the measurement of viscosity. Therefore, the correct answer is "ચીકાશ માપવા" which translates to "to measure viscosity".

Vitamin A is known to improve vision and promote eye health. It helps in the production of a pigment called rhodopsin, which is necessary for good vision, especially in low light conditions. Therefore, consuming an adequate amount of vitamin A can enhance the sharpness and clarity of vision, leading to improved eye function.

Sulfuric acid is known as the king of chemicals because it is one of the most widely used and important industrial chemicals. It is a strong acid that is commonly used in various industries such as fertilizers, dyes, detergents, and batteries. Sulfuric acid is highly corrosive and can cause severe burns, making it a powerful and dangerous substance. Its importance in various chemical processes and its wide range of applications contribute to its title as the king of chemicals.

Joseph Priestley ઓક્સિજનની શોધ કરી હતી.

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Iron is the main component of hemoglobin, the protein in red blood cells that carries oxygen from the lungs to the rest of the body. Iron binds to oxygen in the lungs and releases it in tissues that need it. Therefore, iron is essential for the proper functioning of hemoglobin and oxygen transport in the body.

ફોર્મિક એસીડ કીડી કરડે ત્યારે આપે છે.

વિજ્ઞાન દિવસ પ્રતિ વર્ષે 28 ફેબ્રુઆરીએ ઉજવાય છે.

એનીમિયા ખોરાકમાં આયર્નની ઉણપથી થાય છે.

ઓપ્થોલ્મોલોજી વિશેનો અધ્યયન છે જે આંખોના રોગો અને તમામ આંખ સંકરણોને શામેલ કરે છે. આંખ માટેના રોગોનું અધ્યયન ઓપ્થોલ્મોલોજીનો વિષય છે.

વિટામીન-ડીની ઉણપ થી સુક્તાન રોગ થાય છે. સુક્તાન એક વિટામીન-ડીની અભાવને જોતો રોગ છે જેમાં હાડકાં ક્ષય અને હાડની કમજોરી સાથે રહેશે. આ રોગ મુખ્યત્વે બાળકોમાં દેખાય છે જેમાં તેઓને હાડની વાંધણી અને હાડની ખોરાકની અભાવ થાય છે.

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Bronchitis is a respiratory disease that affects the bronchial tubes, which are the airways that carry air to and from the lungs. The inflammation of the bronchial tubes can cause symptoms such as coughing, wheezing, and shortness of breath. Therefore, the correct answer is "શ્વાસનળી" (bronchial tubes).

The correct answer is "સિંકોના વૃક્ષ". The reason for this is that the tree of Cinchona is known for its medicinal properties and is used in the treatment of malaria. Cinchona trees contain quinine, which is an effective antimalarial drug. Therefore, the tree of Cinchona is useful in the treatment of malaria.

Graphite cannot be used to reduce friction because it is a lubricant itself. It has a slippery texture and is commonly used as a dry lubricant in various applications. It reduces friction by forming a thin layer between two surfaces, allowing them to slide smoothly against each other. Therefore, graphite would not be a suitable substance for reducing friction in this case.

થોરિયમ એક કાચી ધાતુ છે.

The question asks for the average body temperature in Kelvin. The correct answer is 310 Kelvin.

The correct answer is "ફ્રૂફટોઝ". This is because "ફ્રૂફટોઝ" is the main component of honey.

The correct answer is "કેરોટિન" (keratin). Keratin is a protein found in milk that gives it a white or creamy color. It is also responsible for the white color of other substances such as hair, nails, and feathers.