(826) The SI base unit for mass is ?
- A. Gram
- B. Pound
- C. Kilogram
- D. Ounce
(827) Covalent network crystals have ?
- A. higher melting point then molecular crystals
- B. lower melting point then molecular crystals
- C. discrete molecules linked by Van der waals forces
- D. hydrogen bonding
(828) A substance which increases the efficiency of a catalyst is termed as:
- A. Promoter
- B. Activator
- C. Retarder
- D. Super catalyst
(829) The distance of longitude represents how many minutes difference in time?
- A. 10 minutes
- B. 4 minutes
- C. 15 minutes
- D. 1 minute
(830) A canyon is a large form of ?
- A. Dry valley
- B. Gorge
- C. Pediment
- D. Badiand
(831) The production of rubber tree is better adopted to areas where the climate is
- A. Warm and humid
- B. Warm and dry
- C. Cool and moist
- D. cool and dry
(832) Galvanised Iron sheets have a coating of
- A. Tin
- B. Silver
- C. Zinc
- D. Chromiu m
(833) Which of the following metal occurs in free state ?
- A. Lead
- B. Iron
- C. Mercury
- D. Copper
(834) What is the name of the central part of the earth?
- A. Mantle
- B. Core
- C. Crust
- D. None of the above
(835) On passing through food stuff, X-ray can kill the ?
- A. Fungus
- B. Virus
- C. Bacteria
- D. insects
(836) A man can survive without food for atleast?
- A. 1 month
- B. 2 month
- C. 3 month
- D. 4 month
(837) What is it called when the Earth is closest to the sun ?
- A. Aphelion
- B. Perihelion
- C. Apoapsis
- D. Periapsis
(838) Water vapor is ?
- A. A gas
- B. A cloud droplet
- C. A rain drop
- D. A snowflake
(839) Fog that most often forms as warm rain falls into a cold layer of surface air is called ?
- A. Radiation fog
- B. Evaporatio n (mixing) fog
- C. Advection fog
- D. Upslope fog
(840) Tesla is the unit of ?
- A. Magnetic Field Strength
- B. Electric Field Strength
- C. Gravitation al Field Strength
- D. Nuclear Field Strength
(841) Pollutants that are introduced into the environment by human activity are called as ?
- A. Qualitative pollutants
- B. Quantitativ e pollutants
- C. Anthropoge nic pollutant
- D. All of Above
(842) Isobars are the lines connecting the places having same: ?
- A. Pressure
- B. Rainfall
- C. Height
- D. Temperatur e
(843) Which of the followong spacecrsft enabled man to step on the moon first?
- A. Spuntnik I
- B. Luna II
- C. Vostok I
- D. Apollo XI
(844) X-rays were discovered by ?
- A. Wilhelm Conrad Roentgen
- B. Thomson
- C. Ernest Rutherford
- D. Bacquerel
(845) Which metallic element is liquid at room temperature? Page 54 o
- A. Zinc f 65
- B. Nickel
- C. Lead
- D. Mercury
(846) Which of the following Rays are more Penetrating?
- A. Beta rays
- B. Alpha rays
- C. Gamma rays
- D. X-rays
(847) Boiling of an egg is a change which is ?
- A. Physical
- B. Chemical
- C. Physiologica l
- D. Morphologi cal
(848) Largest moon in our solar system is ?
- A. Deimos
- B. Ganymede
- C. Phobos
- D. Arche
(849) Most abundant color in Earth is ?
- A. Blue
- B. Green
- C. Brown
- D. Black
(850) In Space, our Body ?
- A. Gains Weight
- B. Loses Weight
- C. No Change
- D. Little Change