Question 1 of 20 1,623 total questions
Which of the following molecules has a triple bond in its structure?
Which of the following molecules has a linear shape?
A solid substance with high melting and boiling points is likely to be a/an
A covalent compound
B dative covalent compound
C electrovalent compound
D non-metal
Which of the following species correctly represented an ion of M with 13 protons and 10 electrons?
A 10 M 3+
B 10 M 3-
C 13 M 3+
D 13 M 3-
If X is a group lll element, its oxide would be represented as
Which of the following statements about chlorine and iodine at room temperature is correct?
A Chlorine is gas and iodine is solid
B Chlorine is liquid and iodine is gas
C Chlorine and iodine are gases
D Chlorine is solid and iodine is liquid
Which of the following elements is a d-block element?
A Calcium
B lron
C Lithium
D Silicon
The energy change which accompanies the addition of an electron to a gaseous atom is
A atomization
B electron affinity
C electronegativity
D ionization
Which of the following equations represents beta decay?
A \(\frac{14}{7}\)N + \(\frac{4}{2}\)He → \(\frac{8}{17}\)O + \(\frac{1}{1}\)H
B \(\frac{8238}{92}\)U → \(\frac{234}{90}\)Th + \(\frac{4}{2}\)He
C \(\frac{8238}{92}\)U → \(\frac{239}{93}\)Np + \(\frac{0}{-1}\)e
D \(\frac{13}{7}\)N + \(\frac{4}{2}\)He → \(\frac{16}{8}\)O + \(\frac{1}{1}\)H
Which of the following noble gases has electronic structure similar to that of N in NH\(_3\)? [\(^{14}_7\)N]
Which of the following elements exhibits the same chemical properties as the atom \(\frac{35}{17}\)X? An element with
A atomic number 17
B atomic number 18
C mass number 35
D mass number 52
An important medical use of nuclear radiations is
A activation analysis
B carbon dating
C radiotherapy
D tissue regeneration
The electron configuration of carbon atom in its excited state is [ 6 C]
A 1s2 2s 2 2px1 2py 1
B 1s 2 2s 2 2px 2 2pyo
C 1s1 2s2 2px1 2py1 2pz1
D 1s 2 2s1 2px1 2py1 2pz1
The electron configuration of carbon atom in its excited state is [ 6C]
A 1s2 2s 2 2px1 2py 1
B 1s 2 2s 2 2px 2 2pyo
C 1s1 2s2 2px1 2py1 2pz1
D 1s 2 2s1 2px1 2py1 2pz1
Which of the following alloys does not contain copper? l. Brass II. Bronze III. Steel
A l only
B ll only
C lll only
D ll and lll only
The major product in the solvay process is
A NaOH
B Na 2 CO 3
C NH 3
D H 2 SO4
A consequence of global warming is
A air pollution
B flooding
C increased humidity
D low rainfall
Dry hydrogen chloride when dissolved in methylbenzene
A turns blue litmus paper red
B turns red litmus paper blue
C does not affect litmus paper
D bleaches litmus paper
Ethanol reacts with excess acidified K2 Cr 2 O7 to produce
A ethanal
B ethane
C ethanoic acid
D ethylethanoate
What is the product of the reaction between propene and 1 mole of hydrogen iodide?
A CH3 CHICH3
B CH 3 CH2 CHI2
C CH 3 CH 2 CI3
D CH 3 CHICH2 I
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