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periodic classification of elements · Gujarat Board (GSEB) STD 10 (GSEB - English Medium). 35 questions.

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35 questions · timed · auto-graded

MCQ 11 Mark
Enzyme required for digestion of food in amoeba is produced by which cellular organelle?
  • A
    Mitochondria
  • B
    Chloroplast
  • ✓
    Lysosome
  • D
    Golgi body
Answer
Correct option: C.
Lysosome
Lysosome
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MCQ 21 Mark
In the below organism in which group is food digested outside the body and then absorbed.
  • A
    ) Mushrooms, Green plants, Amoeba
  • ✓
    Yeast, Mushroom, Bread mould
  • C
    Paramoecium, Amoeba, Amar bell.
  • D
    Amar bell, Lice, Tape-worms
Answer
Correct option: B.
Yeast, Mushroom, Bread mould
Yeast, Mushroom, Bread mould
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MCQ 31 Mark
The opening and closing of stomata depends on what ?
  • A
    Proportion of $O _2$
  • B
    Temperature
  • ✓
    Water in guard cells
  • D
    Concentration of $CO _2$ in stomata
Answer
Correct option: C.
Water in guard cells
Water in guard cells
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MCQ 41 Mark
The opening and closing of stomata depends on what ?
  • A
    Proportion of $O _2$
  • B
    Temperature
  • ✓
    Water in guard cells
  • D
    Concentration of $CO _2$ in stomata
Answer
Correct option: C.
Water in guard cells
Water in guard cells
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MCQ 51 Mark
In which organ the exchange of respiratory gases take place?
  • A
    Trachea
  • ✓
    Alveoli
  • C
    Larynx
  • D
    Nasopharynx
Answer
Correct option: B.
Alveoli
Alveoli
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MCQ 61 Mark
During which process is energy released from absorbed food?
  • A
    Digestion
  • ✓
    Respiration
  • C
    Excretion
  • D
    None of these
Answer
Correct option: B.
Respiration
Respiration
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MCQ 71 Mark
Which fundamental particle forms the real basis for the modern classification of elements?
  • ✓
    Proton
  • B
    Electron
  • C
    Neutron
  • D
    Nucleon
Answer
Correct option: A.
Proton
A. Proton
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MCQ 81 Mark
Which one of the following does not increase while moving down the group of the periodic table?
  • A
    Atomic radius
  • B
    Metallic character
  • ✓
    Valence electrons
  • D
    Basicity of oxides
Answer
Correct option: C.
Valence electrons
C. Valence electrons
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MCQ 91 Mark
The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen is...........
  • A
    $O, F, N$
  • B
    $N, F, O$
  • C
    $O, N, F$
  • ✓
    $F, O, N$
Answer
Correct option: D.
$F, O, N$
$F, O, N$
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MCQ 101 Mark
The element which has the maximum number of valence electrons is ...............
  • ✓
    $15^P$
  • B
    $11Na$
  • C
    $14Si$
  • D
    $13Al$
Answer
Correct option: A.
$15^P$
$15^P$
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MCQ 111 Mark
Which of the following is the valence shell for the elements of second period of the modern periodic table?
  • A
    $M-$ shell
  • B
    $K-$ shell
  • C
    $N-$ shell
  • ✓
    $L-$ shell
Answer
Correct option: D.
$L-$ shell
$L-$ shell
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MCQ 121 Mark
The atomic number of an element is 20. In modern periodic table, this element is placed in..............
  • A
    $2$nd period 
  • B
    $3$rd period
  • C
    $1$st period
  • ✓
    $4$th period
Answer
Correct option: D.
$4$th period
$4$th period
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MCQ 131 Mark
The electronic configuration of the atom of an element is $2, 8, 7$. In this reference, which of the following statements are correct?
  • A
    This element belong to group $17.$
  • B
    This element has a tendency to gain one electron.
  • C
    The element fluorine is placed above this element.
  • ✓
    $a,b,c$
Answer
Correct option: D.
$a,b,c$
$a,b,c$
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MCQ 141 Mark
Which of the following statements are correct for modern periodic table?
  • A
    New elements can be easily arranged.
  • B
    Predictions of properties of the elements become easy.
  • C
    The elements have been divided into metals and non-metals by the thick zig-zag line running diagonally across the periodic table.
  • ✓
    $a,b,c$
Answer
Correct option: D.
$a,b,c$
$a,b,c$
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MCQ 151 Mark
Which of the following increase while moving down the group $17$ elements?
  • A
    Atomic radius
  • B
    Metallic character
  • ✓
    $a$ and $b$
  • D
    All
Answer
Correct option: C.
$a$ and $b$
$a$ and $b$
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MCQ 161 Mark
Which of the following statements is not a correct statement about the trends when going from left to right across the periods of periodic table :
  • A
    The elements become less metallic in nature.
  • B
    The number of valence electrons increases.
  • ✓
    The atoms lose their electrons more easily.
  • D
    The oxides become more acidic.
Answer
Correct option: C.
The atoms lose their electrons more easily.
C. The atoms lose their electrons more easily.
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MCQ 171 Mark
Where would you place the element with electronic configuration $2, 8$ in the modern periodic table?
  • A
    Group $8$
  • B
    Group $2 $
  • ✓
    Group $18$
  • D
    Group $10$
Answer
Correct option: C.
Group $18$
Group $18$
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MCQ 181 Mark
The electronic configuration of the atom of an element $X$ is $2, 8, 4.$ In modern periodic table, the element $X$ is placed in .........
  • A
    Group $2$
  • ✓
    Group $14$
  • C
    Group $4$
  • D
    Group $8$
Answer
Correct option: B.
Group $14$
Group $14$
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MCQ 191 Mark
An element which is an essential constituent of all organic compounds belong to..........
  • A
    Group $4$
  • B
    Group $10$
  • C
    Group $16$
  • ✓
    Group $14$
Answer
Correct option: D.
Group $14$
Group $14$
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MCQ 201 Mark
Which of the following element will gain an electron easily?
  • A
    $Na$
  • ✓
    $F$
  • C
    $Mg$
  • D
    $Al$
Answer
Correct option: B.
$F$
$F$
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MCQ 211 Mark
Which of the following element would lose an electron easily?
  • A
    $Mg$
  • B
    $Na$
  • ✓
    $K$
  • D
    $Ca$
Answer
Correct option: C.
$K$
$K$
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MCQ 221 Mark
The elements $A, B, C, D$ and $E$ have atomic numbers $9, 11, 17, 12$ and $13$ respectively. The pair of elements which belong to the same group of the periodic table is...............
  • A
    $A$ and $B$
  • B
    $B$ and $D$
  • C
    $D$ and $E$
  • ✓
    $A$ and $C$
Answer
Correct option: D.
$A$ and $C$
$A$ and $C$
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MCQ 231 Mark
The elements $A, B, C, D$ and $E$ have atomic numbers of $2, 3, 7, 10$ and $18$ respectively. The elements which belong to the same period of the periodic table are..........
  • A
    $A, B, C$
  • ✓
    $B, C, D$
  • C
    $A, D, E$
  • D
    $B, D, E$
Answer
Correct option: B.
$B, C, D$
$B, C, D$
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MCQ 241 Mark
Which of the following is not correct about the trends when going from left to right across the periods of the periodic table?
  • A
    The elements become more non-metallic in nature.
  • B
    The number of valence electrons increases.
  • ✓
    The atoms lose their electrons easily.
  • D
    The oxides become more acidic.
Answer
Correct option: C.
The atoms lose their electrons easily.
C. The atoms lose their electrons easily.
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MCQ 251 Mark
Who proposed the ‘Modern periodic law’ for the modern periodic table?
  • A
    Dobereiner
  • B
    Newlands
  • ✓
    Henry Moseley
  • D
    Mendeleev
Answer
Correct option: C.
Henry Moseley
C. Henry Moseley
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MCQ 261 Mark
An element $X$ forms an oxide $X2O3$. In which group of Mendeleev’s periodic table is this element placed?
  • A
    Group $II$
  • ✓
    Group $III$
  • C
    Group $V$
  • D
    Group $VIII$
Answer
Correct option: B.
Group $III$
Group $III$
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MCQ 271 Mark
Which of the following statements about the modern periodic table is correct?
  • A
    It has $18$ horizontal rows known as periods.
  • B
    It has $8$ vertical columns known as periods.
  • ✓
    It has $18$ vertical columns known as groups.
  • D
    It has $7$ horizontal rows known as groups.
Answer
Correct option: C.
It has $18$ vertical columns known as groups.
It has $18$ vertical columns known as groups.
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MCQ 281 Mark
Which of the following statements is correct with regard to the classification of elements?
  • A
    Elements in modern periodic table are arranged on the basis of increasing atomic masses .........
  • B
    Elements in modern periodic table table are arranged on the basis of decreasing atomic numbers.
  • C
    In modern periodic table, the element nickel of lower atomic mass is kept before the element cobalt of higher atomic mass.
  • ✓
    In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
Answer
Correct option: D.
In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
D. In modern periodic table, the isotopes of chlorine having different atomic masses are kept in the same group.
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MCQ 291 Mark
The atomic numbers of four elements $P, Q, R$ and $S$ are $6, 8, 14$ and $16$ respectively. Out of these, the element known as metalloid is ............
  • A
    $P$
  • B
    $Q$
  • ✓
    $R$
  • D
    $S$
Answer
Correct option: C.
$R$
$R$
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MCQ 301 Mark
For which of the following element, Mendeleev didn’t left gap in his periodic table?
  • A
    Gallium
  • ✓
    Beryllium
  • C
    Germanium
  • D
    Scandium
Answer
Correct option: B.
Beryllium
B. Beryllium
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MCQ 311 Mark
The three imaginary elements $X , Y$ and $Z$ represent a Dobereiner's triad. If the atomic mass of element $X$ is $14 u$ and that of element $Y$ is $46 u$ , then the atomic mass of element $Z$ will be .........
  • A
    $28$
  • B
    $60$
  • ✓
    $78$
  • D
    $72$
Answer
Correct option: C.
$78$
$78$
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MCQ 321 Mark
In Mendeleev’s periodic table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the periodic table later?
  • A
    $Be$
  • ✓
    $Ge$
  • C
    $Si$
  • D
    $Se$
Answer
Correct option: B.
$Ge$
$Ge$
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MCQ 331 Mark
The elements Si, $B$ and Ge are..........
  • A
    metallic elements
  • B
    non-metals
  • ✓
    metalloids
  • D
    metal, non-metal and metalloid respectively
Answer
Correct option: C.
metalloids
C. metalloids
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MCQ 341 Mark
According to Mendeleev's periodic law, the elements were arranged in the periodic table in the order of.......
  • A
    increasing atomic number.
  • B
    decreasing atomic number.
  • ✓
    increasing atomic masses.
  • D
    decreasing atomic masses.
Answer
Correct option: C.
increasing atomic masses.
C. increasing atomic masses.
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MCQ 351 Mark
Newlands’ law of octaves was found to be applicable upto............
  • A
    nickel
  • B
    cobalt
  • C
    phosphorus
  • ✓
    calcium
Answer
Correct option: D.
calcium
D. calcium
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