Pakistan Daily Current Affairs
    Who is the first Pakistani woman to summit Gasherbrum II and second Pakistani woman to summit Mount Everest?
    Author: rikazzz Comment
    Passes and Glaciers of the World
    Which two countries are connected by Brenner Pass?
    Author: rikazzz Comment
    Pakistan Daily Current Affairs
    When was the National Action Plan established?
    The National Action Plan (NAP) is an action plan that was established in 2014. It was created by the government of Pakistan in response to the increasing threat of terrorism and extremism in the country.
    Author: rikazzz Comment
    Everyday Science
    Which nutrient has the highest calorific value?
    Fats have the highest calorific value of any nutrient, providing 9 calories per gram. Carbohydrates and proteins provide 4 calories per gram each.
    Author: rikazzz Comment
    Everyday Science
    Retina in the eye acts as a:
    The retina in the eye acts as the film in a camera. It is a light-sensitive layer of tissue at the back of the eye that contains photoreceptor cells. These cells convert light into electrical signals that are sent to the brain, where they are interpreted as images.
    Author: rikazzz Comment
    Everyday Science
    Colours that we see when a CD or DVD is viewed at different angle is due to:
    CDs show rainbow colors because of the combined effects of reflection, diffraction, and transmission of light.
    Author: rikazzz Comment
    Elements and Substances
    How many nonmetals are in gaseous state ?
    There are 11 nonmetals that are in gaseous state at room temperature. They are: Hydrogen, Helium, Nitrogen, Oxygen, Fluorine, Neon, Chlorine, Argon, Krypton, Xenon and Radon.
    Author: rikazzz Comment
    Elements and Substances
    How many non-metals are solids at room temperature excluding metalloids?
    Carbon, phosphorus, sulfur, selenium, and iodine are all non-metals. They are all solids at room temperature.
    Author: rikazzz Comment
    Everyday Science
    Who first proposed the theory of an expanding universe?
    The theory of an expanding universe was first proposed by Edwin Hubble in 1929. He discovered that the light from distant galaxies was shifted towards the red end of the spectrum, which is a phenomenon known as redshift. Redshift is caused by the expansion of space, so Hubble’s discovery provided evidence that the universe is expanding.
    Author: rikazzz Comment
    Everyday Science
    Which type of radiation is absorbed by the ozone layer?
    The upper layer of the atmosphere is called the stratosphere. The stratosphere contains ozone, which is a molecule made up of three oxygen atoms. Ozone absorbs ultraviolet radiation from the sun. Ultraviolet radiation is harmful to life on Earth because it can damage DNA.
    Author: rikazzz Comment