| 101. | How to prepare phenolphthalein indicator.formula of phenolphthalein . | 239 | Let's Play |
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| 102. | x-ray fluorescence|| working of x-ray fluorescence||x-ray fluorescence in hindi|| principle of XRF | 235 | |
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| 103. | Solar constant. | 233 | |
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| 104. | parboiled rice yane kya hota hai||parboiled rice||perboiled rice benefits||parboiled rice making | 231 | |
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| 105. | what is critical pressure. | 215 | |
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| 106. | Why mg per liter express as ppm and ug(microgram) per liter express as ppb.without formula . | 214 | |
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| 107. | रौप्य महोत्सव याने कितने साल||सुवर्ण महोत्सव-अमृत महोत्सव-हिरक महोत्सव याने कितने साल होते है|| | 213 | |
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| 108. | Anhydrous meaning | 210 | |
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| 109. | Activated carbon | activated charcoal| activated carbon preparation|activated carbon uses. | 210 | |
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| 110. | Difference between hydrophilic and hydrophobic. | 208 | |
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| 111. | How to prepare starch indicator. | 206 | Guide |
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| 112. | Specific humidity | 205 | |
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| 113. | How to prepare 0.02N silver nitrate (AgNo3). | 205 | Guide |
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| 114. | Bioassay | 204 | |
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| 115. | buffer zone - core zone - ecosensitive zone -manipulation zone (transition zone) | 202 | |
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| 116. | How to calculate molecular weight and equivalent weight of HCL | 199 | Guide |
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| 117. | How to prepare 0.05 N silver nitrate (AgNo3) solution., silver nitrate. | 197 | Guide |
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| 118. | Sulphur cycle|| sulphur cycle in hindi.||sulfer cycle. | 197 | Let's Play |
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| 119. | How to prepare 0.05 mg per ml Nacl solution. | 193 | Guide |
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| 120. | How to prepare working solution from stock solution. | 184 | |
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| 121. | British thermal unit ||what is british thermal unit || unit of heat || BTU ||Btu || | 183 | |
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| 122. | How to calculate molecular weight and equivalent weight of acetic acid (CH3COOH). | 183 | Tutorial |
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| 123. | uniform velocity and uniform acceleration difference||what uniform velocity and uniform acceleration | 183 | |
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| 124. | Angstrom || Angstrom conversion || Angstrom symbol || Angstrom kya hai || Angstrom meaning | 182 | |
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| 125. | what is X ray crystallography||X ray crystallography in Hindi|| #shorts | 181 | Vlog |
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| 126. | How to prepare phosphate buffer solution pH =7.2 | 180 | Guide |
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| 127. | what is activated sludge and activated sludge process||activated sludge process||activated sludge | 180 | |
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| 128. | Saturated and unsaturated hydrocarbon | 178 | |
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| 129. | How to prepare 20 ppm Nacl solution in 500ml distill water. | 178 | Guide |
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| 130. | calcification||calcification kya hota hai||calcification in hindi calcification in brain|| | 176 | |
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| 131. | Difference between solution, suspension and colloid. | 176 | |
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| 132. | Difference between brackish water, Marine water and fresh water | 173 | |
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| 133. | How many item in 1 gross and kodi||1 gross means how many items|| | 173 | |
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| 134. | what is decantation. | 168 | |
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| 135. | what happens when water added to acid #shorts #science #chemistry #scienceexperiment | 166 | |
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| 136. | Difference between Sea and ocean. | 166 | |
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| 137. | sedimentary rock||Sedimentary rock formation||sedimentary rock in hindi||sedimentary rock class 5 | 164 | |
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| 138. | speed of light||speed of light in water||speed of light in air||speed of light in glass | 162 | |
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| 139. | Benefit of tamarind seed powder|इमली बीज के चूर्ण के फायदे|tamarind seed health benefits | 160 | |
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| 140. | difference between unicellular and multicellular organisms||unicellular organism||multicellular | 160 | |
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| 141. | how many liters in 1 barrel||1 barrel mein kitne litre hote hain||1 barrel mein kitna litre hota hai | 159 | |
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| 142. | 0.1 normality का NaOH solution 50 ml मे किस तऱ्हा बना सकते है. | 154 | |
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| 143. | thallus meaning #shorts | 150 | |
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| 144. | Principle and reaction of dissolved oxygen determination practical. | 149 | |
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| 145. | Types of industrial hazard. | 148 | |
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| 146. | what is fluorescence||fluorescence meaning ||fluorescence definition ||#fluorescence | 148 | |
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| 147. | major massive and minor heart attack क्या होता है||major attack||minor attack||massive attack | 144 | | Heart Attack
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| 148. | what is retrospective tax||retrospective tax kya hai||retrospective tax||retrospective tax meaning | 143 | |
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| 149. | नार्को टेस्ट क्या है || narco test || narco test kya hota hai || narco test kaise kiya jata hai. | 143 | |
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| 150. | Determination Of Phosphate | 141 | |
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| 151. | pumpkin seeds benefits||pumpkin seeds||pumpkin seeds how to eat||pumpkin seeds benefits in hindi | 140 | Guide |
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| 152. | meter to centimeter|| how many cm in 1m | 139 | |
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| 153. | How to calculate dilution factor. | 139 | Guide |
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| 154. | what is break point chlorination #shorts | 138 | |
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| 155. | Determination of CO2 in given water sample. | 136 | |
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| 156. | 1yojan kitna hota hai||1yojan kitne kilometer ke barabar hota hai||1 yojan yane kitne mile hote hai | 135 | |
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| 157. | How to prepare buffer solution || ammonium chloride -ammonium hydroxide buffer solution.(pH =10) | 135 | Guide |
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| 158. | ultrasonic sound and infrasonic sound. | 131 | |
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| 159. | critical mass ||critical mass in hindi|| critical mass in nuclear fission||critical size|| | 128 | |
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| 160. | plasmolysis meaning #shorts | 127 | |
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| 161. | Aerobic and anaerobic meaning. | 126 | |
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| 162. | mm to cm||mm Stone in kidney||mm to cm conversation||mm cm kya hota hai||centimeters to millimeters | 126 | |
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| 163. | How many meters in 1 hectometer and in 1 decameter||decameter to meter ||hectometer to meter|| | 125 | |
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| 164. | Montreal protocol || what is Montreal protocol || Montreal protocol क्या है || #montrealprotocol | 124 | |
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| 165. | malleability||malleability in hindi||malleability definition||malleability meaning || #malleability | 124 | |
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| 166. | ilaayachee(elaichi) benefits||elaichi ke fayde||elaichi khane ke fayde||cardamom benefits||cardamom | 121 | |
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| 167. | what is zeolite process #science #chemistry #shorts | 121 | |
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| 168. | class 9 science unit 2 work and energy exercise question number 5 a)||class 9 science exercise | 119 | |
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| 169. | class 9 equations describing the relation between velocity and time||velocity and time relation | 118 | |
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| 170. | Oxygen cycle || oxygen cycle in hindi. | 116 | |
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| 171. | How to draw graph in spectrophotometer analyses. | 116 | Guide |
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| 172. | How to prepare 0.1N,0.001N,0.05N etc from 1N stock solution,without formula. | 115 | Guide |
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| 173. | Methods of hazards identification | 113 | |
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| 174. | How to prepare 0.05N Nacl solution. | 113 | Guide |
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| 175. | speed breaker power generation science exhibition model #shorts | 113 | |
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| 176. | mpemba effect || why hot water freez fastly than cold water || | 110 | |
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| 177. | neutral isolated gaseous atom meaning||electron affinity||ionisation energy|| | 108 | |
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| 178. | क्या अल्कोहल हार्ट को फायदा करता है?|is alcohol good for health?||kya alcohol heart ke liye safe hai | 108 | |
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| 179. | isotropic and anisotropic #shorts #isotropic #anisotropic | 108 | |
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| 180. | concept of 3R | 107 | |
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| 181. | Hydroponics | हायड्रोपोनिक्स || hydroponics kya hai || what is hydroponics. | 107 | |
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| 182. | How to prepare methyl orange indicator. | 106 | Guide |
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| 183. | How to prepare ammonium molybdate solution for inorganic phosphorus determination. | 104 | Guide |
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| 184. | what is saponification number||saponification number in Hindi #shorts #science #chemistry | 103 | |
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| 185. | How to prepare alkaline potassium iodide solution. | 100 | Guide |
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| 186. | how many triangles||find triangle number #shorts #science #maths | 100 | |
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| 187. | How to prepare potassium chromate indicator, principle of chloride determination. | 97 | Guide |
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| 188. | How to calculate molecular weight and equivalent weight of sodium thiosulphate. | 97 | Let's Play |
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| 189. | Difference between america and USA|| difference between america and USA in hindi | 96 | |
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| 190. | what is noble metal #shorts | 95 | |
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| 191. | flash point and fire point|flash point and fire point in hindi|flash point and fire point definition | 95 | |
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| 192. | what is epiphyte||epiphytic plant || epiphyte meaning||epiphytic plants in hindi|| | 94 | |
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| 193. | unit of work||class 9 work and energy||units of work||work SI and CGS unit||cgs and si unit of work | 94 | |
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| 194. | Enthalpy meaning||meaning of enthalpy in hindi||enthalpy thermodynamics||enthalpy class 11 chemistry | 93 | Let's Play |
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| 195. | what is a monochromatic light #shorts | 92 | |
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| 196. | invert sugar kya hota hai #shorts | 92 | |
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| 197. | olfactory indicator|| indicator||acid base indicator|| olfactory indicator for class 10 in Hindi | 92 | |
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| 198. | Tidal energy || tidal power | 92 | |
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| 199. | 1 hectogram yane kitna gram||100 gram याने कितना होता है||gram to kilogram conversation|| | 91 | Vlog |
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| 200. | what is yeast #shorts #science #chemistry | 91 | |
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