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Figure shows four tubes with lengths 1.0 m or 2.0 m with one or two open ends as drawn. The third harmonic is set up in each tube, and some of the
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A student took four test tubes containing solutions of different colours marked I, II, III and IV as shown here. The test tubes containing copper sulphate solution and ferrous sulphate solution could
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![A student took four test tubes containing solutions of different colours marked I,II, III and IV as shown here. The test tubes containing copper sulphate solution and ferrous sulphate could be the A student took four test tubes containing solutions of different colours marked I,II, III and IV as shown here. The test tubes containing copper sulphate solution and ferrous sulphate could be the](https://d10lpgp6xz60nq.cloudfront.net/physics_images/NCERT_CHM_X_C05_E01_135_Q01.png)
A student took four test tubes containing solutions of different colours marked I,II, III and IV as shown here. The test tubes containing copper sulphate solution and ferrous sulphate could be the
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Four test tubes were taken and marked A, B, C and D respectively. 2 mL of solution of Al(2)(SO)(3) in water was filled in each of the four test-tubes. Clean piece of
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These are the incredible four-tube night-vision goggles SEAL Team Six wore during the Bin Laden raid
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