• PHYSICAL PRINCIPLES OF GAS EXCHANGE
    GENERAL KNOWLEDGE

    PHYSICAL PRINCIPLES OF GAS EXCHANGE

    Introduction Gas exchange refers to the process by which oxygen is taken in from the air and carbon dioxide is expelled from the body. This process primarily occurs in the lungs and involves several physical principles, including diffusion, partial pressure…

  • STOCK EXCHANGE AND SECOND TIER SECURITIES MARKET
    COMMERCE

    STOCK EXCHANGE AND SECOND TIER SECURITIES MARKET

    MEANING OF STOCK EXCHANGE Stock exchange market is a highly organised market where investors can buy and sell existing securities like shares, stocks, debentures, gilt edge etc. This is a market where those who are interested in purchase of securities…

  • EXCHANGE
    COMMERCE

    EXCHANGE

    Exchange is the process of giving out value in order to have something of value in return. In the olden days, barter was the main system of exchange, i.e ., goods for goods. But nowadays, one can exchange money for…

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