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Question:- What is the radioactive isotope of hydrogen is called? A. Deuterium B. Rotium C. Radium D. Tritium
Answer:- D
Question:- Which isotope is used through the radioactive age estimation technique to obtain (determine) the age of rocks? A. Uranium isotope B. Plutonium isotope C. Thorium isotope D. Carbon isotope
Answer:- A
Question:- The radio isotope used to control the disease like blood cancer (Leukaemia) is: A. Phosphorus-32 B. Cobalt-60 C. Iodine-131 D. Sodium-24
Answer:- B
Question:- Isotones are those which have: A. Equal number of protons B. Equal number of neutrons C. Equal number of nucleons D. None of these
Answer:- B
Question:- The iso electronic of AI+3 is: A. CI- B. AI C. S- D. F-
Answer:- D
Question:- The element which has same mass number but different atomic number is called: A. Isotope B. Isobar C. Isoneutronic D. Isoelectronic
Answer:- B
Question:- By the emission of which isomers are produced: A. Alpha-ray B. Beta-ray C. Gama-ray D. X-ray
Answer:- B
Question:- How many molecules have the methane? A. Double bond B. Triple bond C. Single covalent bond D. None of these
Answer:- C
Question:- What is the shape of the ethylene molecule? A. Linear B. Tetrahedral C. Coplanar triangular D. Hectohedral
Answer:- C
Question:- Which of the following compound is tetrahedral? A. Ammonia B. Carbon tetrachloride C. Water D. Acetylene
Answer:- B
Question:- Through the fused sodium chloride, electric current can pass out due to the presence of: A. Free electron B. Free ion C. Free molecule D. The atoms of sodium and chlorine
Answer:- B
Question:- The higher boiling point of the water occurs due to: A. Its more specific heat B. Its more value of the dielectric constant C. Less molecular disassociation in H20 D. Presence of hydrogen bonding among the molecules of H20
Answer:- B
Question:- The tendency to donate the electron is called: A. Oxidation B. Reduction C. catylisation D. self-induction
Answer:- A
Question:- The tendency to accept the electron is called: A. Oxidation B. Reduction C. catylisation D. Self induction
Answer:- B