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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.
| 1451. |
Which of the following is NOT the function of a vacuole? |
| A. | Storage |
| B. | Providing turbidity and rigidity to the cell |
| C. | Waste excretion |
| D. | Locomotion |
| Answer» E. | |
| 1452. |
Abhi conducted an experiment to investigate what would happen when different cell organelles of a balsam plant leaf are removed. The results are recorded in the table given below. Cell Parts Out comes P The cell cannot function properly Q Iodine solution remains yellowish brown. R The cell cannot control the entry and exit of the substances. S The cell loses its regular shape. Identify cell parts \[P,\,\,Q,\,\,R\] and\[S\]. |
| A. | (P) (Q) (R) (S) Nucleus Chlorophyll Cell Wall Cytoplasm |
| B. | (P) (Q) (R) (S) Cytoplasm Chloroplast Nucleus Cell membrane |
| C. | (P) (Q) (R) (S) Nucleus Chloroplast Cell membrane Cell Wall |
| D. | (P) (Q) (R) (S) Nucleus Chloroplast Cell Wall Cell membrane |
| Answer» D. (P) (Q) (R) (S) Nucleus Chloroplast Cell Wall Cell membrane | |
| 1453. |
The radius of anatomic nucleus is close to |
| A. | \[{{10}^{-2}}cm\] |
| B. | \[{{10}^{-5}}cm\] |
| C. | \[{{10}^{-8}}cm\] |
| D. | \[{{10}^{-12}}cm\] |
| Answer» E. | |
| 1454. |
Which cell organelle is involved in protein synthesis? |
| A. | Chromosome |
| B. | Lysosome |
| C. | Ribosome |
| D. | Mesosome |
| Answer» D. Mesosome | |
| 1455. |
\[^{22}Na\]contains |
| A. | 22 protons |
| B. | 11 neutrons |
| C. | 22 neutrons |
| D. | none of these |
| Answer» B. 11 neutrons | |
| 1456. |
A neutral atom of an element has a nucleus with a nuclear charge 13 times and mass 27 times that of hydrogen nucleus. How many electrons would be in its stable positively charged ion? |
| A. | 27 |
| B. | 14 |
| C. | 13 |
| D. | 10 |
| Answer» E. | |
| 1457. |
Calculate the weight of \[2.5\] moles of\[CaC{{O}_{3}}\]. |
| A. | \[200\,\,g\] |
| B. | \[230\,\,g\] |
| C. | \[240\,\,g\] |
| D. | \[250\,\,g\] |
| Answer» E. | |
| 1458. |
An atom contains 6 protons and 8 neutrons. What should be its atomic number? |
| A. | 14 |
| B. | 6 |
| C. | 8 |
| D. | 2 |
| E. | None of these |
| Answer» C. 8 | |
| 1459. |
An element X forms an oxide with formula \[{{X}_{2}}{{O}_{3}}\]. The formula of its sulphate and phosphate will be respectively |
| A. | \[XS{{O}_{4}}\] and \[{{X}_{2}}{{(P{{O}_{4}})}_{3}}\] |
| B. | \[{{X}_{2}}{{(S{{O}_{4}})}_{3}}\] and \[XP{{O}_{4}}\] |
| C. | \[X{{(S{{O}_{4}})}_{2}}\] and \[X{{(P{{O}_{4}})}_{2}}\] |
| D. | \[{{X}_{2}}S{{O}_{4}}\] and \[{{X}_{3}}P{{O}_{4}}\] |
| Answer» C. \[X{{(S{{O}_{4}})}_{2}}\] and \[X{{(P{{O}_{4}})}_{2}}\] | |
| 1460. |
Which of these cell organelles stores starch grains and oil drops? |
| A. | Mitochondrion |
| B. | Leucoplast |
| C. | Chloroplast |
| D. | Ribosome |
| Answer» C. Chloroplast | |
| 1461. |
Cathode rays are |
| A. | electronegative waves |
| B. | radiations |
| C. | stream of a -particles |
| D. | stream of electrons |
| Answer» E. | |
| 1462. |
Which of the following cells is similar to the cell shown below? |
| A. | A sperm |
| B. | A cheek cell |
| C. | A nerve cell |
| D. | A mature RBC |
| Answer» C. A nerve cell | |
| 1463. |
Which of the following statements is not true about the sperm cell? |
| A. | It has a long tail capable of swimming |
| B. | It does not have a cell wall. |
| C. | It have substances that carry genetic information |
| D. | It is the longest cell |
| Answer» E. | |
| 1464. |
An atom of Mn, atomic number 25 and atomic weight 55 contains in its nucleus |
| A. | 55 protons |
| B. | 55 neutrons |
| C. | 25 neutrons |
| D. | 25 protons |
| Answer» E. | |
| 1465. |
Which one of the following statements is correct? Statement 1: Nucleus of an atom is negatively charged. Statement 2: Nucleus of an atom consists of protons and neutrons. |
| A. | Statement 1 only |
| B. | Statement 2 only |
| C. | Both statements are correct |
| D. | Both statements are incorrect |
| E. | None of these |
| Answer» C. Both statements are correct | |
| 1466. |
An atom contains 14 protons and 16 neutrons. What is its mass number? |
| A. | 14 |
| B. | 16 |
| C. | 30 |
| D. | 2 |
| E. | None of these |
| Answer» D. 2 | |
| 1467. |
What is the molecular mass of\[{{H}_{2}}S{{O}_{4}}\] ? |
| A. | 64 |
| B. | 98 |
| C. | 36 |
| D. | 56 |
| E. | None of these |
| Answer» C. 36 | |
| 1468. |
What is the atomic mass of oxygen? |
| A. | 8 |
| B. | 16 |
| C. | 32 |
| D. | 64 |
| E. | None of these |
| Answer» C. 32 | |
| 1469. |
Organelles of eukaryotic cells that are bounded by cell membrane are: |
| A. | Mitochondria |
| B. | Endoplasmic reticulum |
| C. | Chloroplasts |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 1470. |
What is the maximum number of electrons that can be accommodated in the second shell? |
| A. | 2 |
| B. | 8 |
| C. | 18 |
| D. | 26 |
| E. | None of these |
| Answer» C. 18 | |
| 1471. |
The first energy level or shell is represented by which one of the following letter? |
| A. | K |
| B. | L |
| C. | M |
| D. | N |
| E. | None of these |
| Answer» B. L | |
| 1472. |
The atomic mass of oxygen is 16 and the molecular mass of ozone is 48. What is the atomicity of ozone, if it is an allotrope of oxygen? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 1473. |
Find the number of moles of sodium nitrate which contains 1.5 moles of oxygen atoms. |
| A. | \[0.5\] |
| B. | \[1.5\] |
| C. | \[2.0\] |
| D. | \[1.0\] |
| Answer» B. \[1.5\] | |
| 1474. |
Which of the following statements is true about the plant cell? |
| A. | The cytoplasm is filled up with nucleus. |
| B. | The cytoplasm is a jelly-like mixture of cellulose. |
| C. | Plant cells contain a rigid cell wall made up of cellulose. |
| D. | There are plenty of Chloroplast granules in plant root cells. |
| Answer» D. There are plenty of Chloroplast granules in plant root cells. | |
| 1475. |
How many moles are present in \[5.3\,\,g\] of anhydrous sodium carbonate? |
| A. | \[0.03\] moles |
| B. | \[0.04\] moles |
| C. | \[0.05\] moles |
| D. | \[0.01\] moles |
| Answer» D. \[0.01\] moles | |
| 1476. |
Cathode rays are made up of |
| A. | positively charged particles |
| B. | negatively charged particles |
| C. | neutral particles |
| D. | none of these |
| Answer» C. neutral particles | |
| 1477. |
The approximate production of sodium carbonate per month is \[424\times {{10}^{6}}g\] while that of methyl alcohol is\[320\times {{10}^{6}}g\]. Which of the following is produced more in terms of number of moles? |
| A. | Sodium carbonate |
| B. | Methyl alcohol |
| C. | Both [a] and [b] |
| D. | Data insufficient |
| Answer» C. Both [a] and [b] | |
| 1478. |
What is the weight of \[3\] gram atoms of sulphur? |
| A. | \[96\,\,g\] |
| B. | \[99\,\,g\] |
| C. | \[100\,\,g\] |
| D. | \[3\,\,g\] |
| Answer» B. \[99\,\,g\] | |
| 1479. |
A sample of ammonia weighs 4 g. What mass of sulphur dioxide contains the same number of molecules as are in 4 g of ammonia? |
| A. | 64 g |
| B. | 32 g |
| C. | 15 g |
| D. | 30 g |
| Answer» D. 30 g | |
| 1480. |
Which one of the following is correct about elements? |
| A. | Elements are consists of one type of atoms. |
| B. | Elements are smallest part of a substance. |
| C. | All the elements are consists of same type of atoms. |
| D. | All the above |
| E. | None of these |
| Answer» B. Elements are smallest part of a substance. | |
| 1481. |
Maximum number of electrons present in a shell is given by the formula______. |
| A. | \[2n\] |
| B. | \[{{n}^{2}}\] |
| C. | \[{{n}^{3}}\] |
| D. | \[2{{n}^{2}}\] |
| E. | None of these |
| Answer» E. None of these | |
| 1482. |
Which cell structure controls all the activities in the cell? |
| A. | Chloroplast |
| B. | Cytoplasm |
| C. | Nucleus |
| D. | Vacuole |
| Answer» D. Vacuole | |
| 1483. |
Which one of the following in not a type of connective tissue? |
| A. | Adipose tissue |
| B. | Cartilage tissue |
| C. | Blood and lymph |
| D. | Pharynx |
| E. | None of these |
| Answer» E. None of these | |
| 1484. |
Ciliated columnar epithelium is found in the: |
| A. | Fallopian |
| B. | Living of mouth |
| C. | Uterus |
| D. | Respiratory tract |
| E. | None of these |
| Answer» E. None of these | |
| 1485. |
Calculate the number of moles present in \[60\,\,g\] of\[NaOH\]. |
| A. | \[1.2\] moles |
| B. | \[1.5\] moles |
| C. | \[2.5\] moles |
| D. | \[0.15\] moles |
| Answer» C. \[2.5\] moles | |
| 1486. |
Which of the following statements is/are correct? I. 5 moles of \[\text{C}{{\text{O}}_{\text{2}}}\] and 5 moles of \[{{\text{H}}_{\text{2}}}\text{O}\] have the same mass. II. 100 g of \[\text{N}{{\text{H}}_{\text{3}}}\] has more atoms than that present in 100 g of \[{{\text{N}}_{\text{2}}}\]. III. 16 g of solid sulphur contains \[\text{3}\text{.76}\times \text{1}{{\text{0}}^{\text{22}}}\] molecules. |
| A. | I and II only |
| B. | II and III only |
| C. | III only |
| D. | I only |
| Answer» C. III only | |
| 1487. |
The meristematic tissue which are found beneath the bark and of threes is: |
| A. | Apical meristems |
| B. | Lateral meristems |
| C. | Intercalary meristems |
| D. | All the above |
| E. | None of these |
| Answer» C. Intercalary meristems | |
| 1488. |
The meristematic tissue which are found at the base of leaves or internode is called: |
| A. | Apical meristems |
| B. | Lateral meristems |
| C. | Intercalary meristems |
| D. | All the above |
| E. | None of these |
| Answer» D. All the above | |
| 1489. |
Sulphur molecule exists as\[{{S}_{8}}\]. How many moles of sulphur are present in \[25.6\] grams of sulphur? |
| A. | \[0.01\]moles |
| B. | \[0.1\]moles |
| C. | \[0.02\]moles |
| D. | \[0.2\]moles |
| Answer» C. \[0.02\]moles | |
| 1490. |
____ is the dead mechanical tissue of the plant. |
| A. | Parenchyma |
| B. | Sclerenchyma |
| C. | Collenchyma |
| D. | Chlorenchyma |
| E. | None of these |
| Answer» C. Collenchyma | |
| 1491. |
The matrix in which grana are embedded is known as ____. |
| A. | Chondroblasts |
| B. | Stroma |
| C. | Osteoclast |
| D. | Serum |
| E. | None of these |
| Answer» C. Osteoclast | |
| 1492. |
In which of the following organisms you observe a cell with three different types of large organelles each bounded by two membranes. |
| A. | A plant |
| B. | An animal |
| C. | A fungus |
| D. | A bacterium |
| Answer» B. An animal | |
| 1493. |
Calculate the weight of sulphur present in \[1.5\] moles of hydrogen sulphide. |
| A. | \[48\,\,g\] |
| B. | \[50\,\,g\] |
| C. | \[60\,\,g\] |
| D. | \[70\,\,g\] |
| Answer» B. \[50\,\,g\] | |
| 1494. |
The mass of atom is constituted mainly by |
| A. | neutrons and neutrions |
| B. | neutrons and electrons |
| C. | neutrons and protons |
| D. | protons and electrons |
| Answer» D. protons and electrons | |
| 1495. |
The graphical representation of number of molecules of different gases is given. Which gases are placed at correct position? |
| A. | \[{{\text{H}}_{2}}\text{, He}\] |
| B. | \[{{\text{N}}_{\text{2}}}\text{, C}{{\text{H}}_{\text{4}}}\] |
| C. | \[\text{He, C}{{\text{H}}_{4}}\] |
| D. | \[{{\text{H}}_{2}}\text{, C}{{\text{H}}_{4}}\] |
| Answer» D. \[{{\text{H}}_{2}}\text{, C}{{\text{H}}_{4}}\] | |
| 1496. |
Which one of the following organelles is not present in plant cells? |
| A. | Nucleus |
| B. | Mitochondria |
| C. | Plastids |
| D. | Centrioles |
| E. | None of these |
| Answer» E. None of these | |
| 1497. |
The number of electrons in the atom which has 20 protons in the nucleus is |
| A. | 20 |
| B. | 10 |
| C. | 30 |
| D. | 40 |
| Answer» B. 10 | |
| 1498. |
Which is different in isotopes of an element? |
| A. | Atomic number |
| B. | Mass number |
| C. | Number of protons |
| D. | Number of electrons |
| Answer» C. Number of protons | |
| 1499. |
Calculate the number of molecules present in\[0.5\]moles of magnesium oxide\[(MgO)\]. (Atomic weights\[Mg=24,\,\,O=16\]) |
| A. | \[14.09\times {{10}^{23}}\]molecules |
| B. | \[3.0115\times {{10}^{23}}\]molecules |
| C. | \[30.12\times {{10}^{23}}\]molecules |
| D. | \[14.09\times {{10}^{-23}}\]molecules |
| Answer» C. \[30.12\times {{10}^{23}}\]molecules | |
| 1500. |
An atom has net charge of -1. It has 18 electrons and 20 neutrons. Its mass number is |
| A. | 37 |
| B. | 35 |
| C. | 38 |
| D. | 20 |
| Answer» B. 35 | |