Answer: A) Kazakhstan Explanation: Kazakhstan is the largest landlocked country in the world with an area of 2,724,900 km² and the ninth largest in the world. Kazakhstan is located in Central Asia bordering 5 countries, China, Kyrgyzstan, Russia, Turkmenistan, and Uzbekistan.

A Coffin.

Answer: A) Emulsion Explanation: Milk is an emulsion of oil in water (o/w). Emulsion: A suspension of droplets of one liquid in another. Constituents of milk : The principal constituents of milk are water, fat, proteins, lactose (milk sugar) and minerals (salts). Milk also contains trace amounts of other substances such as pigments, enzymes, vitamins, phospholipids (substances with fatlike properties), and gases.

Answer: A) gravitational pull Explanation: The atmospheric pressure at the surface of the Earth is due to gravitational pull of the earth and is about 14.7 psi.   That means that the weight of a column of air which has a cross section of 1 square inch and which stretches from the surface of the Earth to space is 14.7 pounds.

Answer: D) Leather bags Explanation: Biodegradable substances can be broken down into simpler, harmless substances in nature with due course of time by the biological process such as action of microbes. They can be recycled as a part of food chain.   Here, Leather bags are biodegradable.

Answer: C) sympathetic Explanation: A callous person is insensitive or emotionally hardened.   Hence, Callous is the opposite of Sympathetic, kind hearted, sensitive, nice,...

Answer: C) < 85 db Explanation: Sound intensity or level is measured by a unit called a decibel. An 85 decibel noise level is not a safe standard for the public.   Hence, Acceptable noise level for human ear is less than 85 db.

Palm tree.