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MCQOPTIONS
This section includes 1777 Mcqs, each offering curated multiple-choice questions to sharpen your 9th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1401. |
An ionic compound of element/Wand chlorine has the formula, \[\text{MC}{{\text{l}}_{\text{3}}}\]. The molecular mass of \[\text{MC}{{\text{l}}_{3}}\] is 118.5. What will be the molecular mass of the oxide of element M? |
| A. | 28 |
| B. | 44 |
| C. | 72 |
| D. | 99 |
| Answer» D. 99 | |
| 1402. |
Direction: Observe the given flow chart and answer the following question.What are a and b? |
| A. | a = multiply by 22.4 L, b = multiply by 22.4 L |
| B. | a = multiply by 22.4 L, b = divide by 22.4 L |
| C. | a = divide by 22.4 L, b = divide by 22.4 L |
| D. | a = divide by 22.4 L, b = multiply by 22.4 L |
| Answer» C. a = divide by 22.4 L, b = divide by 22.4 L | |
| 1403. |
Which cell transports oxygen? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» B. | |
| 1404. |
Four strips are cut from a fresh potato. The length of each strip is measured. One strip is placed in water and others in different concentrations of sugar solution. After an hour, the strips were measured again. The results are shown in the table. Which of the liquids P, Q, R and S is water? Liquid Original length of strip (mm) Final length of strip (mm) P 75 75 Q 78 80 R 82 80 S 86 85 |
| A. | P |
| B. | Q |
| C. | R |
| D. | S |
| Answer» C. R | |
| 1405. |
Which of the following is true regarding the size of the orbits? |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |
| 1406. |
Direction: Refer to the given key and answer the following question.(i) Membrane with definite pores - T(ii) Inner membrane with stalked particles - Q(iii) Inner membrane connected into stacks like structures - R(iv) Sac like organelle containing hydrolytic enzymes - S(v) Membrane less organelle composed of one large and one small subunit - TSelect the correct match of organelle and its function. |
| A. | P - Protein synthesis |
| B. | R - Fat synthesis |
| C. | S - Disposal of worn out cells |
| D. | T - Energy production |
| Answer» D. T - Energy production | |
| 1407. |
The number of atoms of oxygen present in 24 g of oxygen gas is: |
| A. | \[5.2\times {{10}^{23}}\] atoms |
| B. | \[9.03\times {{10}^{23}}\]atoms |
| C. | \[5.8\times {{10}^{24}}\] atoms |
| D. | \[9.4\times {{10}^{24}}\]atoms |
| E. | None of these |
| Answer» C. \[5.8\times {{10}^{24}}\] atoms | |
| 1408. |
Plant cell does not burst in a hypotonic solution because _____. |
| A. | Its cell sap is more concentrated |
| B. | Its cell wall resists bursting |
| C. | Its cell sap is rich in cellulose |
| D. | It does not have lysosomes |
| Answer» C. Its cell sap is rich in cellulose | |
| 1409. |
The process by which carbon dioxide, oxygen and water move across the plasma membrane is called: |
| A. | Diffusion |
| B. | Osmosis |
| C. | Inhalation |
| D. | Exhalation |
| E. | None of these |
| Answer» B. Osmosis | |
| 1410. |
Chlorine is a ________ element. |
| A. | Monoatomic |
| B. | Diatomic |
| C. | Tetra-atomic |
| D. | Polyatomic |
| E. | None of these |
| Answer» C. Tetra-atomic | |
| 1411. |
Carbon and oxygen react to produce carbon dioxide. What is the weight of oxygen required to convert \[1.5\,\,g\] of carbon to carbon dioxide? |
| A. | \[2\,\,g\] |
| B. | \[6\,\,g\] |
| C. | \[1\,\,g\] |
| D. | \[4\,\,g\] |
| Answer» E. | |
| 1412. |
Few functions of a cell organelle are given below. Find the name of the cell organelle based on the given functions. (i) Impart green colour. (ii) Impart colour to fruits and flowers. (iii) Store starch. |
| A. | Golgi body |
| B. | Nucleus |
| C. | Plastids |
| D. | Cell wall |
| E. | None of these |
| Answer» D. Cell wall | |
| 1413. |
How many gram atoms are present in \[256\,\,g\] of\[{{O}_{2}}\]? |
| A. | \[16\] gram atoms |
| B. | \[32\] gram atoms |
| C. | \[14\] gram atoms |
| D. | \[36\] gram atoms |
| Answer» B. \[32\] gram atoms | |
| 1414. |
____ is the haploid set of chromosomes. |
| A. | Nucleus |
| B. | Grana |
| C. | Genome |
| D. | Gene |
| E. | None of these |
| Answer» D. Gene | |
| 1415. |
Which of the following cell organelles is absent in mammalian RBC? |
| A. | Mitochondria |
| B. | Nucleus |
| C. | Endoplasmic reticulum |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1416. |
Among the following cell organelles P, Q, R and S, which is the odd one out? |
| A. | S, because the others are membrane bound cell organelles. |
| B. | P, because the others are involved' in cell secretion. |
| C. | R, because the others are involved in protein storage. |
| D. | Q, because the others are involved in energy production. |
| Answer» B. P, because the others are involved' in cell secretion. | |
| 1417. |
Which of the following is not isoelectronic? |
| A. | \[\text{N}{{\text{a}}^{+}}\] |
| B. | \[M{{g}^{2+}}\] |
| C. | \[{{\text{O}}^{\text{2}-}}\] |
| D. | \[C{{l}^{-}}\] |
| Answer» D. \[C{{l}^{-}}\] | |
| 1418. |
The charge on the atom having 17 protons, 18 neutrons and 18 electrons is |
| A. | +1 |
| B. | -1 |
| C. | -2 |
| D. | zero |
| Answer» C. -2 | |
| 1419. |
When alpha rays are sent through a thin metal foil, most of them go straight through the foil because |
| A. | alpha rays are much heavier than electron rays |
| B. | alpha rays are positively charged |
| C. | alpha rays move with high velocity |
| D. | most part of the atom is empty |
| Answer» D. most part of the atom is empty | |
| 1420. |
X is a double membraned organelle that oxidises food present in cell to release energy. X is ________. |
| A. | Nucleus |
| B. | Endoplasmic reticulum |
| C. | Mitochondrion |
| D. | Chloroplast |
| Answer» D. Chloroplast | |
| 1421. |
Which of the following is correct for the given figure? |
| A. | The part labelled 'b' is called intergranal thylakoid. |
| B. | The part labelled 'c' is called granum. |
| C. | The part labelled 'a' is the site of dark reaction. |
| D. | The parts labelled 'a', 'b' and 'c', all possess photosynthetic pigments such as chlorophyll. |
| Answer» D. The parts labelled 'a', 'b' and 'c', all possess photosynthetic pigments such as chlorophyll. | |
| 1422. |
The species having same number of protons are called: |
| A. | Isobars |
| B. | Isotones |
| C. | both (a) and (b) |
| D. | Isotopes |
| Answer» E. | |
| 1423. |
Mass numbers of atoms of an element are 1, 2, 3 respectively. Identify the element. |
| A. | Beryllium |
| B. | Lithium |
| C. | Hydrogen |
| D. | Helium |
| Answer» D. Helium | |
| 1424. |
Which part of the cell contains genetic information? |
| A. | Cell |
| B. | Nucleus |
| C. | Chloroplast |
| D. | Mitochondria |
| Answer» C. Chloroplast | |
| 1425. |
Calculate the number of moles present in \[17\] grams of\[AgN{{O}_{3}}\]. |
| A. | \[0.2\] moles |
| B. | \[0.1\] mole |
| C. | \[2\] moles |
| D. | \[1\] mole |
| Answer» C. \[2\] moles | |
| 1426. |
Which of the following represents \[X\] and\[Y\]? Cell X Cell Y Present Absent Present Absent Cell Wall √ √ Cytoplasm √ √ Nucleus √ √ Cell Membrane √ √ Chloroplast √ √ |
| A. | X-Animal cell, Y-Plant cell |
| B. | X-Plant cell, Y-Animal cell |
| C. | X-Fungal cell, Y-Animal cell |
| D. | X-Animal cell, Y-Fungal Cell |
| Answer» D. X-Animal cell, Y-Fungal Cell | |
| 1427. |
Four different experiments were conducted in the following ways : I. 3 g of carbon was burnt in 8 g of oxygen to give 11 g of \[\text{C}{{\text{O}}_{\text{2}}}\]. II. 1.2 g of carbon was burnt in air to give 4.2 g of \[\text{C}{{\text{O}}_{\text{2}}}\]. III. 4.5 g of carbon was burnt in enough air to give 11 g of \[\text{C}{{\text{O}}_{\text{2}}}\]. IV. 4 g of carbon was burnt in oxygen to form 30.3 g of \[\text{C}{{\text{O}}_{\text{2}}}\]. Law of constant proportions is illustrated in experiment(s) |
| A. | I and III |
| B. | II and III |
| C. | IV only |
| D. | I only. |
| Answer» E. | |
| 1428. |
Calculate the number of moles for the 84 g of He. |
| A. | 42 |
| B. | 21 |
| C. | 84 |
| D. | 24 |
| E. | None of these |
| Answer» C. 84 | |
| 1429. |
Which of the following is incorrect statement for the atoms? |
| A. | Nucleus of an atom is made up of protons and neutrons. |
| B. | Atoms are made up of electrons, protons and neutrons. |
| C. | Atoms are very tiny particles. |
| D. | Atoms of different elements have same chemical properties. |
| E. | None of these |
| Answer» E. None of these | |
| 1430. |
According to the Dalton's atomic theory all matter is made of tiny particles called ________. |
| A. | Molecules |
| B. | Moles |
| C. | Atoms |
| D. | Elements |
| E. | None of these |
| Answer» D. Elements | |
| 1431. |
Which cell organelle is the site of respiration within the cell? |
| A. | Nuclear membrane |
| B. | Mitochondria |
| C. | Lysosome |
| D. | Chloroplast |
| Answer» C. Lysosome | |
| 1432. |
If the formula of a chloride of a metal\[M\]is\[MC{{l}_{3}}\], then what will be the formula of the phosphate of metal\[M\]? |
| A. | \[MP{{O}_{4}}\] |
| B. | \[{{M}_{2}}P{{O}_{4}}\] |
| C. | \[{{M}_{3}}P{{O}_{4}}\] |
| D. | \[{{M}_{2}}{{(P{{O}_{4}})}_{3}}\] |
| Answer» B. \[{{M}_{2}}P{{O}_{4}}\] | |
| 1433. |
Calculate the weight of \[0.885\] moles of\[Mg{{(N{{O}_{3}})}_{2}}\]. |
| A. | \[13.1\,\,g\] |
| B. | \[131\,\,g\] |
| C. | \[130\,\,g\] |
| D. | \[88.5\,\,g\] |
| Answer» C. \[130\,\,g\] | |
| 1434. |
Which one of the following is a triatomic molecule? |
| A. | \[N{{H}_{3}}\] |
| B. | \[C{{H}_{4}}\] |
| C. | \[{{N}_{2}}\] |
| D. | \[N{{O}_{2}}\] |
| E. | None of these |
| Answer» E. None of these | |
| 1435. |
The ratio of C : O by mass in \[C{{O}_{2}}\]is: |
| A. | 8 : 3 |
| B. | 0.130555555555556 |
| C. | 1 : 16 |
| D. | 16 : 1 |
| E. | None of these |
| Answer» C. 1 : 16 | |
| 1436. |
Which of the following statements is not true about the given figure? |
| A. | P and Q have a nucleus. |
| B. | P and Q carry out life processes. |
| C. | P and Q are animal cells. |
| D. | P is a nerve cell. |
| Answer» B. P and Q carry out life processes. | |
| 1437. |
What does the atomicity of an element tell us about? |
| A. | Physical properties |
| B. | Number of electrons |
| C. | Number of atoms in one molecule |
| D. | Its combining capacity |
| Answer» D. Its combining capacity | |
| 1438. |
The hydride ion is isoelectronic with |
| A. | \[{{\text{H}}^{+}}\] |
| B. | \[\text{H}{{\text{e}}^{+}}\] |
| C. | He |
| D. | Be |
| Answer» D. Be | |
| 1439. |
The mass of \[3.0115\times {{10}^{23}}\] molecules of chlorine is: |
| A. | 35.5 g |
| B. | 7 g |
| C. | 78 g |
| D. | 40 g |
| E. | None of these |
| Answer» B. 7 g | |
| 1440. |
One branch which grows very long as compared to other branches of cell body of a neuron is known as: |
| A. | Dendron |
| B. | Axon |
| C. | Nucleus |
| D. | Synapse |
| E. | None of these |
| Answer» C. Nucleus | |
| 1441. |
Which of the following statements is correct for a secretory cell? |
| A. | Golgi apparatus is absent. |
| B. | Rough endoplasmic reticulum is abundantly present in the cell. |
| C. | Only smooth endoplasmic reticulum is present. |
| D. | Secretory granules are formed in nucleus. |
| Answer» C. Only smooth endoplasmic reticulum is present. | |
| 1442. |
An element has atomic number 11 and mass number 24. What does the nucleus contain? |
| A. | 11 protons and 13 neutrons |
| B. | 11 protons, 13 neutrons and 13 electrons |
| C. | 13 protons and 11 neutrons |
| D. | 13 protons and 11 electrons |
| Answer» C. 13 protons and 11 neutrons | |
| 1443. |
Which of the following features is common to chloroplasts, chromoplasts and leucoplasts? |
| A. | The presence of pigments |
| B. | The possession of thylakoids and grana. |
| C. | They are storage plastids |
| D. | The ability to multiply |
| Answer» E. | |
| 1444. |
Identify the function of Ribosome. |
| A. | Generates energy |
| B. | Synthesise lipids |
| C. | Carries genetic material |
| D. | Synthesise proteins |
| Answer» E. | |
| 1445. |
Read the following statements carefully. Which of them are true (T) and which of them are false (F)?(i) Granum is the site of dark reaction during photosynthesis, whereas stroma is the site of light reaction during photosynthesis.(ii) Lysosomes are formed by the joint activity of endoplasmic reticulum and Golgi complex.(iii) Each 70S ribosome consists of a large 50S subunit and a small 30S subunit.(iv) The chromosome in which the centromere is near the end and consequently its one arm is very short and the other arm very long, is called acrocentric chromosome. |
| A. | (i)(ii)(iii)(iv)TTFF |
| B. | (i)(ii)(iii)(iv)FTTT |
| C. | (i)(ii)(iii)(iv)FFFT |
| D. | (i)(ii)(iii)(iv)TFTF |
| Answer» C. (i)(ii)(iii)(iv)FFFT | |
| 1446. |
The study of tissues is called: |
| A. | Pathology |
| B. | Immunology |
| C. | Histology |
| D. | Embryology |
| E. | None of these |
| Answer» D. Embryology | |
| 1447. |
Small cavity in which bone cell is enclosed: |
| A. | Osteocyte |
| B. | Lacuna |
| C. | Leucocyte |
| D. | Axon |
| E. | None of these |
| Answer» C. Leucocyte | |
| 1448. |
Formula of copper (II) sulphate pentahydrate is: |
| A. | \[CuS{{o}_{4}}.2{{H}_{2}}O\] |
| B. | \[Cu\,S{{o}_{4}}.5{{H}_{2}}O\] |
| C. | \[5Cu\,S{{o}_{4}}.{{H}_{2}}O\] |
| D. | \[Cu\,S{{o}_{4}}.{{H}_{2}}O\] |
| E. | None of these |
| Answer» C. \[5Cu\,S{{o}_{4}}.{{H}_{2}}O\] | |
| 1449. |
Number of valence electrons in sulphur are: |
| A. | 8 |
| B. | 6 |
| C. | 2 |
| D. | 7 |
| E. | None of these |
| Answer» C. 2 | |
| 1450. |
Identify the correct increasing order of molecular weights of the given compounds. |
| A. | \[{{H}_{2}}O>{{H}_{2}}S>C{{O}_{2}}>S{{O}_{2}}\] |
| B. | \[{{H}_{2}}O>{{H}_{2}}S>C{{O}_{2}}>S{{O}_{2}}\] |
| C. | \[{{H}_{2}}O<{{H}_{2}}S<C{{O}_{2}}<S{{O}_{2}}\] |
| D. | \[{{H}_{2}}O>{{H}_{2}}S>C{{O}_{2}}>S{{O}_{2}}\] |
| Answer» D. \[{{H}_{2}}O>{{H}_{2}}S>C{{O}_{2}}>S{{O}_{2}}\] | |