2521. Which of the following helps in clotting of blood? AVitamin B2 BVitamin B1 CVitamin D DVitamin K Show answer Discuss 🔖 Save ✅ D. Vitamin K
2522. Transistor is a device that convert weak signal into_____? Astrong signal Bsmall signal Cboth Dnone Show answer Discuss 🔖 Save ✅ A. strong signal
2523. The Mirror used in the Automobiles are______? AConvex BConcave CPlains DReflective Show answer Discuss 🔖 Save ✅ A. Convex
2524. Newton’s Third Law of Motion? Aattraction or repulsion between two charges Bevery action there is an equal and opposite reaction. Cvolume of a given mass of gas increases or decreases Dtemperature remaining constant, volume of a given mass of a gas varies inversely Show answer Discuss 🔖 Save ✅
2525. Science which deals with the position and movement of heavenly bodies ? AAstronomy BAstrophysics CAstrology DAstronautics Show answer Discuss 🔖 Save ✅ A. Astronomy
2526. Disease beri beri is because of______? AUse of milled rice BLack of green vegetables in diet CDeficiency of calcium in bones DPoor use of citrus fruits Show answer Discuss 🔖 Save ✅ A. Use of milled rice
2527. The gas used in a refrigerator to cool water is______? ACarbon dioxide BNitrogen CMethane DTetrafluoroethane Show answer Discuss 🔖 Save ✅ D. Tetrafluoroethane
2528. The hard, solid rocks, whose composition or texture has been changed by heat or pressure in the Earth are called_______? AMetamorphic rocks BSedimentary rocks CIgneous rocks DAll of the above Show answer Discuss 🔖 Save ✅ A. Metamorphic rocks
2529. Our plan __ to succeed. Apass by Bbid fair Cboil down Dhand and galore Show answer Discuss 🔖 Save ✅ B. bid fair
2530. Diesel engine was discovered by______? AFaraday BPaul Muller CWaldeyer DRudolf Diesel Show answer Discuss 🔖 Save ✅ D. Rudolf Diesel