Isotopic, Isobaric and Isoneutronic

1.The number of isotopes in polonium is
A. 15
B. 17
C. 23
D. 27
Option”D” is correct
2.Which isotope is used in radioactive dating to determine the age of rocks?
A. uranium
B. hydrogen
C. plutonium
D. Carbon
Option”A” is correct
3.Which isotope is used to detect the position of blood clots in the circulatory system?
A. Already – 24
B. Co – 60
C. As -74
D. I-131
Option”A” is correct
4.Co-60 is commonly used in radiation therapy and diseases like cancer, because it emits
A. α rays
B. β rays
C. γ rays
D. all of these
Option”C” is correct
5.Which is the radioisotope used to control blood cancer?
A. P – 32
B. Co – 60
C. I – 131
D. Already – 24
Option”B” is correct
6.Match List-I with List-II and select the correct answer from the codes given below the Lists : List-I (Radioisotopes) A. Arsenic – 74 B. Cobalt – 60 C. Iodine – 131 D. Sodium – 24 List II (Diagnostic use) 1. Hyperactivity of the thyroid gland 2. Blood disorders 3. Tumors 4. Cancer
A. A → 1, B → 2, C → 3, D → 4
B. A → 4, B → 3, C → 1, D → 2
C. A → 3, B → 4, C → 1, D → 2
D. A → 4, B → 3, C → 2, D → 1
Option”C” is correct
7.Nuclei having same number of neutrons but different number of protons are called
A. isoelectronic
B. burdensome
C. isotopes
D. sumneutronic
Option”D” is correct
8.isotones are
A. even number of protons
B. even number of neutrons
C. even number of nucleons
D. none of these
Option”B” is correct
9.are sumneutronic in which –
A. Same atomic number and different atomic mass
B. The atomic number is different and the atomic mass is the same
C. Both atomic number and atomic mass are different
D. The atomic number and atomic mass are different, but the number of neutrons is the same.
Option”D” is correct
10.What are ₃₆Kr⁸⁶ and ₃₇Kr⁸⁷ called –
A. isotopes
B. burdensome
C. isoelectronic
D. isoelectronic
Option”C” is correct