MCQOPTIONS
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MCQOPTIONS
This section includes 1489 Mcqs, each offering curated multiple-choice questions to sharpen your 8th Class knowledge and support exam preparation. Choose a topic below to get started.
| 901. |
Rhizobium bacteria have _____ with leguminous plants. |
| A. | Free living |
| B. | Symbiotic |
| C. | Parasitic |
| D. | Both [a] and [b] |
| E. | None of these |
| Answer» E. None of these | |
| 902. |
Which one of the following is a preservative used in preservation of fruits as jams and jellies? |
| A. | Mustard oil |
| B. | Vinegar |
| C. | Sugar |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 903. |
Atmospheric nitrogen can be fixed by: |
| A. | Some fungi |
| B. | Some protozoa |
| C. | Some blue green algae |
| D. | Some Virus |
| E. | None of these |
| Answer» D. Some Virus | |
| 904. |
Which one of the following is not a protozoa? |
| A. | Giardia |
| B. | Amoeba |
| C. | Paramecium |
| D. | Fucus |
| E. | None of these |
| Answer» E. None of these | |
| 905. |
Identify the disease and its causative agent on the basis of given symptoms. (i) Small yellow spots formed on upper and lower layer of leaves. (ii) Diseased area dies leaving hole. (iii) Spots appearing on twigs and fruits |
| A. | Yellow vein mosaic ? Virus |
| B. | Citrus canker ? Bacteria |
| C. | Rust of wheat - Fungus |
| D. | Wilt of tomato ? fungus |
| E. | None of these |
| Answer» C. Rust of wheat - Fungus | |
| 906. |
Which one of the following is caused by bacteria? |
| A. | Measles |
| B. | Polio |
| C. | Cholera |
| D. | Dengue |
| E. | None of these |
| Answer» D. Dengue | |
| 907. |
Which system of irrigation among the following is most suitable for the uneven land? |
| A. | Dhekli system |
| B. | Sprinkler system |
| C. | Drip system |
| D. | Rahat system |
| E. | None of these |
| Answer» C. Drip system | |
| 908. |
Which one of the following turns alcohol into acetic acid? |
| A. | Penicillium |
| B. | Acetobacter |
| C. | Mosquito |
| D. | Salmonella typhi |
| E. | None of these |
| Answer» C. Mosquito | |
| 909. |
Which one of the following crops does not require nitrogenous fertiliser? |
| A. | Wheat |
| B. | Millet |
| C. | Beans |
| D. | Paddy |
| E. | None of these |
| Answer» D. Paddy | |
| 910. |
Which one of the following groups of microorganisms is considered on the border line of living and non-living things? |
| A. | Viruses |
| B. | Bacteria |
| C. | Protozoa |
| D. | Algae |
| E. | None of these |
| Answer» B. Bacteria | |
| 911. |
Which of the following crops can be transplanted? |
| A. | Paddy |
| B. | Tomatoes |
| C. | Chillies |
| D. | All the above |
| E. | None of these |
| Answer» E. None of these | |
| 912. |
Which among the following is not a common weed? |
| A. | Amaranthus |
| B. | Wild oat |
| C. | Chenopodium |
| D. | Butachlor |
| E. | None of these |
| Answer» E. None of these | |
| 913. |
In which of the following methods irrigation is done by using rotating nozzles |
| A. | Moat system |
| B. | Chain pump |
| C. | Sprinkler system |
| D. | Drip system |
| E. | None of these |
| Answer» D. Drip system | |
| 914. |
Rhizobium fixes nitrogen in the nodules of leguminous plant: |
| A. | Stem |
| B. | Roots |
| C. | Leaves |
| D. | Flowers |
| E. | None of these |
| Answer» C. Leaves | |
| 915. |
Which one among the following is incorrect about fertilisers? (i) A fertiliser is a salt or an organic compound. (ii) A fertiliser is obtained by the decomposition of animal wastes and plant residues. (iii) A fertiliser provide a lot of humus to the soil. (iv) Most of the fertilisers are soluble in water. |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i) and (iv) |
| E. | None of these |
| Answer» C. (iii) and (iv) | |
| 916. |
The process of loosening and turning the soil is called: |
| A. | Ploughing |
| B. | Levelling |
| C. | Manuring |
| D. | All the above |
| E. | None of these |
| Answer» B. Levelling | |
| 917. |
Which one among the following is a useful microorganism? (i) Salmonella typhi (ii) Rhizobium (iii) Lactobacillus (iv) Rhinovirus |
| A. | (i) and (ii) |
| B. | (ii) and (in) |
| C. | (iii) and (iv) |
| D. | (i) and (iv) |
| E. | None of these |
| Answer» C. (iii) and (iv) | |
| 918. |
Which leaves are used to protect stored grains from insects and microorganisms? |
| A. | Mango leaves |
| B. | Peepal leaves |
| C. | Banana leaves |
| D. | Neem leaves |
| E. | None of these |
| Answer» E. None of these | |
| 919. |
Silos are used for: |
| A. | Harvesting the crops |
| B. | Threshing the corps |
| C. | Storing the grains |
| D. | Irrigation of the crops |
| E. | None of these |
| Answer» D. Irrigation of the crops | |
| 920. |
Cultivator is used for: |
| A. | Irrigation |
| B. | Transplantation |
| C. | Sowing seeds |
| D. | Tilling |
| E. | None of these |
| Answer» E. None of these | |
| 921. |
Which one of the following is a rabi crop? |
| A. | Millet |
| B. | Soyabean |
| C. | Linseed |
| D. | Paddy |
| E. | None of these |
| Answer» D. Paddy | |
| 922. |
Read the following statements and select the correct option. Statement 1: Pheromones are used as biological method to control pest. Statement 2: Pheromones lure adult male insects into special traps and prevent them from breeding. |
| A. | Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. |
| B. | Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. |
| C. | Statement 1 is true but statement 2 is false. |
| D. | Both statements 1 and 2 are false. |
| Answer» B. Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1. | |
| 923. |
Following are given the differences between manures and fertilisers. Which of the given differences are incorrect? Manures Fertilisers (i) They are not soluble in water. So they are not easily absorbed by the roots of the plants. They are soluble in water and are absorbed by the plants easily. (ii) These are inorganic substances. These are organic substances. (iii) Excessive use does not harm the soil texture, they provide humus to the soil. Excessive use can change the chemical composition of the soil and also pollutes water. (iv) They restore the soil texture and help in water retention. They may damage the soil texture. (v) These are nutrient specific. These are not nutrient specific. |
| A. | (ii) and (v) only |
| B. | (i), (ii) and (v) only |
| C. | (iii) and (iv) only |
| D. | (i), (iii) and (v) only |
| Answer» B. (i), (ii) and (v) only | |
| 924. |
Identify the given agricultural tool. |
| A. | Combine |
| B. | Hoe |
| C. | Cultivator |
| D. | Seed drill |
| Answer» C. Cultivator | |
| 925. |
Refer to the given Venn diagram and identify X, Y and Z. |
| A. | X-Combine Y-Thresher Z-Sickle |
| B. | X-Combine Y-Sickle Z-Thresher |
| C. | X-Harvester Y-Sickle Z-Trowel |
| D. | X-Sickle Y-Trowel Z-Harrow |
| Answer» C. X-Harvester Y-Sickle Z-Trowel | |
| 926. |
What does the given figure signify? |
| A. | Life cycle of a plant |
| B. | Jhum cultivation |
| C. | Crop rotation |
| D. | Mixed cropping |
| Answer» D. Mixed cropping | |
| 927. |
The semi-arid plains of a particular region show a pattern of alternating yellow and black stripes on the ground. The yellow stripes consist of land covered by ripening wheat. The black stripes are bare soil on which no crop is grown but farmers use herbicides or tillage to remove any weeds that try to grow in that region.Why do farmers in this region manage soils in this way? |
| A. | Farmers put the half of their land to rest for minimising erosion and soil degradation. |
| B. | Farmers discourage transpiration in the wheat plantation by allowing free evaporation from the soil of the bare stripes. |
| C. | Farmers try to store some part of one year's rainwater in the soil under the bare stripes and use that water to supplement the rain on wheat crop planted the next year. |
| D. | All of these |
| Answer» D. All of these | |
| 928. |
Select the incorrect match. (i) Kharif crop: Paddy and wheat (ii) Rabi crop: Mustard and linseed (iii) Storage of grains: Silos and granaries (iv) Weeds: Amaranthus and Chenopodium |
| A. | (i) only |
| B. | (ii) and (iii) only |
| C. | (iii) only |
| D. | (iii) and (iv) only |
| Answer» B. (ii) and (iii) only | |
| 929. |
The different steps of agricultural practices are given below randomly. (i) Irrigation (ii) Ploughing (iii) Weeding (iv) Levelling (v) Harvesting (vi) Fertilisers (vii) Sowing (viii) Crop protection (ix) Storing seeds Which of the following represents the correct sequence of these practices? |
| A. | (ii) - (iv) - (vii) - (i) - (vi) - (iii) - (viii) - (v) - (ix) |
| B. | (iv) - (ii) - (vii) -(i)-(vi)- (iii) -(viii) - (v) - (ix) |
| C. | (ii) - (vii) - (iv) - (iii) - (i) - (v) - (vi) - (viii) - (ix) |
| D. | (iv) - (vii) - (i) - (ii) - (iii) - (viii) - (ix) - (v) - (vi) |
| Answer» B. (iv) - (ii) - (vii) -(i)-(vi)- (iii) -(viii) - (v) - (ix) | |
| 930. |
Which of the following statements are correct? (i) Cochineal insect is used to eliminate Opuntia. (ii) Water logging decreases the amount of salts in the soil that increases soil fertility. (iii) Fertilisers are not readily soluble in water, so they are absorbed by the plants slowly. (iv) Rust of wheat is a fungal disease. (v) The practice of growing two or more dissimilar crops in the same field one after the other is called mixed cropping. |
| A. | (i), (ii), (iii) and (v) only |
| B. | (i) and (iv) only |
| C. | (ii) and (iv) only |
| D. | (iii), (iv) and (v) only |
| Answer» C. (ii) and (iv) only | |
| 931. |
The cutting and gathering of crop after it is matured is called X. After this, grains are separated from the crop by a process called Y. Z is the process of separating the hay and chaff from the grains.Which of the following statements is/are correct regarding X, Y and Z? |
| A. | Z is done with the help of wind in which grains along with husk is allowed to fall from a height. |
| B. | X is done mechanically by combine and manually by plough and harrow. |
| C. | X is the process known as threshing whereas Y is the process known as winnowing. |
| D. | Both (a) and (b) |
| Answer» B. X is done mechanically by combine and manually by plough and harrow. | |
| 932. |
The period of crop harvesting is celebrated with great joy and happiness in all parts of India. Special festivals are associated with the harvest season. Which among the following group of festivals is associated with harvest season? |
| A. | Pongal, Holi, Diwali, Nabanna |
| B. | Diwali, Christmas, Eid, Pongal |
| C. | Pongal, Eid, Holi, Nabanna |
| D. | Pongal, Baishakhi, Eid, Nabanna |
| Answer» B. Diwali, Christmas, Eid, Pongal | |
| 933. |
In which of the following agricultural practices, the nutrient requirements of one crop are fulfilled by the other crop? |
| A. | |
| B. | |
| C. | |
| D. | Both (a) and (c) |
| Answer» B. | |
| 934. |
Take a beaker and fill half of it with water. Put some wheat seeds in it, stir it and wait for some time. Which of the following holds true regarding the observation and inference of this experiment? |
| A. | Healthy seeds being lighter float on the surface of water. |
| B. | Damaged seeds being lighter float on the surface of water. |
| C. | Some healthy seeds and some damaged seeds float on the surface of water. |
| D. | Damaged seeds being heavier settle down at the bottom. |
| Answer» C. Some healthy seeds and some damaged seeds float on the surface of water. | |
| 935. |
Which among the following are pesticides? (i) Malathion (ii) Metolachlor (iii) Simazine (iv) MCPA (v) Disulfoton (vi) Gammexane (vii) Butachlor (viii) 2, 4-D (ix) Dalapon (x) Endrin |
| A. | (i), (v), (vi) and (x) only |
| B. | (i), (ii), (iii), (iv) and (ix) only |
| C. | (iv), (vi), (vii), (viii) and (x) only |
| D. | (i), (iii), (v), (vi) and (x) only |
| Answer» B. (i), (ii), (iii), (iv) and (ix) only | |
| 936. |
Pick the odd one out from each series given below and select the correct option. (i) Chain pump, Dhekli, Drip system, Pulley system (ii) Urea, Oxychloride, Potash, Ammonium sulphate (iii) Khurpi, Weedicides, Seed drill, Silos (iv) Sowing, Irrigation, Hybridisation, Harvesting (v) 2, 4-D, MCPA, Butachlor, BHC |
| A. | (i) (ii) (iii) (iv) (v) Dhekli Urea Khurpi Irrigation Butachlor |
| B. | (i) (ii) (iii) (iv) (v) Drip system Oxychloride Silos Hybridisation BHC |
| C. | (i) (ii) (iii) (iv) (v) Chain pump Potash Seed drill Sowing MCPA |
| D. | (i) (ii) (iii) (iv) (v) Dhekli Urea Silos Harvesting Butachlor |
| Answer» C. (i) (ii) (iii) (iv) (v) Chain pump Potash Seed drill Sowing MCPA | |
| 937. |
Consider the following statements and select the option which correctly identifies true (T) and false (F) ones.(i) Growing different crops in different seasons in the same field will deplete the nutrients of soil.(ii) Freshly harvested grains must be dried before sowing.(iii) Manures are mineral specific as they provide all the minerals needed by plant.(iv) Broadcasting of seeds is done by seed drill. |
| A. | (i)(ii)(iii)(iv)TFFF |
| B. | (i)(ii)(iii)(iv)FTFF |
| C. | (i)(ii)(iii)(iv)TTFF |
| D. | (i)(ii)(iii)(iv)FTFT |
| Answer» C. (i)(ii)(iii)(iv)TTFF | |
| 938. |
Which of the following is NOT true regarding the importance of wild life? |
| A. | Ecological value |
| B. | Non-commercial value |
| C. | Scientific value |
| D. | Aesthetic value |
| Answer» C. Scientific value | |
| 939. |
Which of the following represents an incorrect match? |
| A. | Coal gas - Methane + Hydrogen |
| B. | LPG - Propane + Butane |
| C. | Producer gas - Carbon + Nitrogen |
| D. | CNG - Compressed methane |
| Answer» D. CNG - Compressed methane | |
| 940. |
During the processing of coal to obtain ____i____, _____ii_____ is formed as a by-product. The information in which alternative completes the given statement? |
| A. | i-Coal gas, ii-Coke |
| B. | i-Coke, ii-Coal tar |
| C. | i-Coal tar, ii-Coal gas |
| D. | i-Coke, ii-Coal gas |
| Answer» E. | |
| 941. |
Pachmarhi Biosphere Reserve includes X national park and two wildlife sanctuaries - Y and Z.Select the option which correctly identify X, Y and Z. |
| A. | X - Satpura; Y- Bori; Z - Pachmarhi |
| B. | X - Bori; Y - Satpura; Z - Pachmarhi |
| C. | X - Pachmarhi; Y - Satpura; Z - Bori |
| D. | X - Tawa; Y - Bori; Z - Pachmarhi |
| Answer» B. X - Bori; Y - Satpura; Z - Pachmarhi | |
| 942. |
When wood is used as a fuel in chullahs, gaps are left in between logs of wood. Why is it done so? |
| A. | To facilitate movement of air |
| B. | To prevent more consumption of wood |
| C. | To control temperature |
| D. | All of these |
| Answer» B. To prevent more consumption of wood | |
| 943. |
What is the common voltage produced by a dry cell? |
| A. | 1.5 V |
| B. | 30 V |
| C. | 60 V |
| D. | 3 V |
| Answer» B. 30 V | |
| 944. |
Some villagers were unhappy that their herds of goats were steadily decreasing in numbers. A boy said that he had seen a tiger near their village one day. So the villagers headed out to hunt and kill as many tigers as they could find. After having killed several tigers for over a year, the villagers found that the number of goats were still decreasing. There was also a sudden increase in the number of monkeys that entered their village. The villagers had killed the wrong animal. Which of the following shows the impact of the villagers' action? (i) The population of the unknown predator increased. (ii) The tiger population went down and became endangered. (iii) The monkey population increased to unmanageable levels. |
| A. | (i) only |
| B. | (ii) only |
| C. | (iii) only |
| D. | (i), (ii) and (iii) |
| Answer» E. | |
| 945. |
Which of the following are the dense threadlike and rod like structures present in the nucleus? |
| A. | Golgi complex and chromatin. |
| B. | Chromosomes and Endoplasmic reticulum |
| C. | Centrosome and chromatin |
| D. | Chromatin and chromosome |
| Answer» E. | |
| 946. |
Which of the following petroleum components is used as a solvent for dry cleaning? |
| A. | Petrol |
| B. | Kerosene |
| C. | Paraffin wax |
| D. | Lubricating oil |
| Answer» B. Kerosene | |
| 947. |
Which type of tissues support, defend and store food in animals? |
| A. | Epithelial |
| B. | Connective |
| C. | Nervous |
| D. | Muscular |
| Answer» C. Nervous | |
| 948. |
Which of the following is/are examples of an organ that contains a smooth muscle? |
| A. | The Iris of eye |
| B. | Uterus only |
| C. | Bronchi only |
| D. | All of these |
| Answer» E. | |
| 949. |
What is the variety of life and the diversity of genes, species and ecosystems of a region and their inter connectedness called? |
| A. | Biosphere |
| B. | Biodiversity |
| C. | Bioconservation |
| D. | Biocommunity |
| Answer» C. Bioconservation | |
| 950. |
The given table lists the ignition temperatures of four fuels W, X, Y, and Z respectively. Fuel Ignition Temperature W \[{{38}^{o}}C\] X \[{{42}^{o}}C\] Y \[{{53}^{o}}C\] At \[{{50}^{o}}C\], which of the given fuels is likely to undergo combustion? |
| A. | Y and Z |
| B. | X and Y |
| C. | Wand X |
| D. | Z and W |
| Answer» B. X and Y | |